diff --git a/app/AccountancyModule/CampModule/presenters/ParticipantPresenter.php b/app/AccountancyModule/CampModule/presenters/ParticipantPresenter.php
index 32481eb99..f729b18b5 100644
--- a/app/AccountancyModule/CampModule/presenters/ParticipantPresenter.php
+++ b/app/AccountancyModule/CampModule/presenters/ParticipantPresenter.php
@@ -141,6 +141,7 @@ protected function createComponentParticipantList(): ParticipantList
             true,
             $this->isAllowParticipantUpdate,
             $this->isAllowParticipantDelete,
+            $this->event->isOnlineLogin(),
         );
 
         $control->onUpdate[] = function (array $updates): void {
diff --git a/app/AccountancyModule/Components/Participants/EditParticipantDialog.php b/app/AccountancyModule/Components/Participants/EditParticipantDialog.php
index 5a92d7155..127e62217 100644
--- a/app/AccountancyModule/Components/Participants/EditParticipantDialog.php
+++ b/app/AccountancyModule/Components/Participants/EditParticipantDialog.php
@@ -22,7 +22,7 @@ final class EditParticipantDialog extends Dialog
     public array $onUpdate = [];
 
     /** @param array<int, Participant> $participants */
-    public function __construct(private array $participants, private bool $isAllowedDaysUpdate, private bool $isAccountAllowed, private bool $isRepaymentAllowed)
+    public function __construct(private array $participants, private bool $isAllowedDaysUpdate, private bool $isAccountAllowed, private bool $isRepaymentAllowed, private bool $isOnlineLogin)
     {
     }
 
@@ -48,10 +48,16 @@ protected function createComponentForm(): BaseForm
         $form = new BaseForm();
 
         if ($this->isAllowedDaysUpdate) {
-            $form->addInteger('days', 'Počet dní')
+            $days = $form->addInteger('days', 'Počet dní')
                 ->setRequired('Musíte vyplnit počet dní')
                 ->addRule(BaseForm::MIN, 'Minimální počet dní je %d', 0)
                 ->setDefaultValue($participant->getDays());
+            if ($this->isOnlineLogin && ! $participant->isAccepted()) {
+                $days->setRequired(false)
+                    ->setDisabled()
+                    ->getControlPrototype()
+                    ->setAttribute('title', 'Nelze upravovat dny pro osoby, které nejsou přijaty přes e-přihlášku');
+            }
         }
 
         $form->addText('payment', 'Částka')
@@ -81,7 +87,7 @@ protected function createComponentForm(): BaseForm
                 $changes[UpdateParticipant::FIELD_PAYMENT] = $values['payment'];
             }
 
-            if ($this->isAllowedDaysUpdate && $values['days'] !== $participant->getDays()) {
+            if ($this->isAllowedDaysUpdate && isset($values['days']) && $values['days'] !== $participant->getDays()) {
                 $changes[UpdateParticipant::FIELD_DAYS] = $values['days'];
             }
 
@@ -93,7 +99,7 @@ protected function createComponentForm(): BaseForm
                 $changes[UpdateParticipant::FIELD_IS_ACCOUNT] = $values['isAccount'];
             }
 
-            $this->onUpdate($this->participantId, $changes);
+            $this->onUpdate($this->participantId, $changes, $participant->isAccepted());
             $this->hide();
         };
 
diff --git a/app/AccountancyModule/Components/Participants/ParticipantList.php b/app/AccountancyModule/Components/Participants/ParticipantList.php
index 9c66fedfa..1e9d9e065 100644
--- a/app/AccountancyModule/Components/Participants/ParticipantList.php
+++ b/app/AccountancyModule/Components/Participants/ParticipantList.php
@@ -8,6 +8,7 @@
 use App\Forms\BaseForm;
 use Model\DTO\Participant\Participant;
 use Model\DTO\Participant\UpdateParticipant;
+use Model\Participant\ParticipantNotFound;
 use Nette\Application\BadRequestException;
 use Nette\Forms\Controls\SubmitButton;
 use Nette\Http\IResponse;
@@ -60,6 +61,7 @@ public function __construct(
         protected bool $isAllowIsAccount,
         protected bool $isAllowParticipantUpdate,
         protected bool $isAllowParticipantDelete,
+        protected bool $isOnlineLogin,
     ) {
     }
 
@@ -162,13 +164,13 @@ public function handleEdit(int $participantId): void
 
     protected function createComponentEditDialog(): EditParticipantDialog
     {
-        $dialog = new EditParticipantDialog($this->participantsById(), $this->isAllowDaysUpdate, $this->isAllowIsAccount, $this->isAllowRepayment);
+        $dialog = new EditParticipantDialog($this->participantsById(), $this->isAllowDaysUpdate, $this->isAllowIsAccount, $this->isAllowRepayment, $this->isOnlineLogin);
 
-        $dialog->onUpdate[] = function (int $participantId, array $fields): void {
+        $dialog->onUpdate[] = function (int $participantId, array $fields, bool $isAccepted): void {
             $changes = [];
 
             foreach ($fields as $field => $value) {
-                $changes[] = new UpdateParticipant($this->aid, $participantId, $field, (string) $value);
+                $changes[] = new UpdateParticipant($this->aid, $participantId, $field, (string) $value, $isAccepted);
             }
 
             $this->onUpdate($changes);
@@ -224,25 +226,36 @@ private function massEditSubmitted(SubmitButton $button): void
 
         $values = $button->getForm()->getValues()['edit'];
 
-        $changes = [];
+        $changes             = [];
+        $currentParticipants = [];
+        foreach ($this->currentParticipants as $key => $p) {
+            $currentParticipants[$p->id] = $p;
+        }
+
         foreach ($button->getForm()->getValues()->participantIds as $participantId) {
+            $participant = $currentParticipants[$participantId] ?? throw new ParticipantNotFound('Cannot find participant from the given data');
+
             if ($values['days'] !== null) {
-                $changes[] = new UpdateParticipant($this->aid, $participantId, UpdateParticipant::FIELD_DAYS, $values['days']);
+                if ($this->isOnlineLogin && ! $participant->isAccepted()) {
+                    $this->flashMessage(sprintf('Nelze upravit hodnotu dny na táboře. Účastník %s není na tábor přihlášen.', $participant->displayName), 'warning');
+                } else {
+                    $changes[] = new UpdateParticipant($this->aid, $participantId, UpdateParticipant::FIELD_DAYS, $values['days'], $participant->isAccepted());
+                }
             }
 
             if ($values['payment'] !== null) {
-                $changes[] = new UpdateParticipant($this->aid, $participantId, UpdateParticipant::FIELD_PAYMENT, $values['payment']);
+                $changes[] = new UpdateParticipant($this->aid, $participantId, UpdateParticipant::FIELD_PAYMENT, $values['payment'], $participant->isAccepted());
             }
 
             if ($values['repayment'] !== null) {
-                $changes[] = new UpdateParticipant($this->aid, $participantId, UpdateParticipant::FIELD_REPAYMENT, $values['repayment']);
+                $changes[] = new UpdateParticipant($this->aid, $participantId, UpdateParticipant::FIELD_REPAYMENT, $values['repayment'], $participant->isAccepted());
             }
 
             if (in_array($values['isAccount'], [self::NO_ACTION, null])) {
                 continue;
             }
 
-            $changes[] = new UpdateParticipant($this->aid, $participantId, UpdateParticipant::FIELD_IS_ACCOUNT, $values['isAccount']);
+            $changes[] = new UpdateParticipant($this->aid, $participantId, UpdateParticipant::FIELD_IS_ACCOUNT, $values['isAccount'], $participant->isAccepted());
         }
 
         $this->onUpdate($changes);
diff --git a/app/AccountancyModule/EducationModule/presenters/ParticipantPresenter.php b/app/AccountancyModule/EducationModule/presenters/ParticipantPresenter.php
index d32f07c9d..411fe10a9 100644
--- a/app/AccountancyModule/EducationModule/presenters/ParticipantPresenter.php
+++ b/app/AccountancyModule/EducationModule/presenters/ParticipantPresenter.php
@@ -104,6 +104,7 @@ protected function createComponentParticipantList(): ParticipantList
             true,
             $this->isAllowParticipantUpdate,
             false,
+            false,
         );
 
         $control->onUpdate[] = function (array $updates): void {
diff --git a/app/AccountancyModule/EventModule/presenters/ParticipantPresenter.php b/app/AccountancyModule/EventModule/presenters/ParticipantPresenter.php
index 45a41984c..e14ebf2ea 100644
--- a/app/AccountancyModule/EventModule/presenters/ParticipantPresenter.php
+++ b/app/AccountancyModule/EventModule/presenters/ParticipantPresenter.php
@@ -131,6 +131,7 @@ protected function createComponentParticipantList(): ParticipantList
             false,
             $this->isAllowParticipantUpdate,
             $this->isAllowParticipantDelete,
+            false,
         );
 
         $control->onUpdate[] = function (array $updates): void {
diff --git a/app/AccountancyModule/Factories/Participants/IParticipantListFactory.php b/app/AccountancyModule/Factories/Participants/IParticipantListFactory.php
index c594964e2..96ad3665f 100644
--- a/app/AccountancyModule/Factories/Participants/IParticipantListFactory.php
+++ b/app/AccountancyModule/Factories/Participants/IParticipantListFactory.php
@@ -18,5 +18,6 @@ public function create(
         bool $isAllowIsAccount,
         bool $isAllowParticipantUpdate,
         bool $isAllowParticipantDelete,
+        bool $isOnlineLogin,
     ): ParticipantList;
 }
diff --git a/app/model/Participant/Exception/ParticipantNotFound.php b/app/model/Participant/Exception/ParticipantNotFound.php
new file mode 100644
index 000000000..bc4aa1f17
--- /dev/null
+++ b/app/model/Participant/Exception/ParticipantNotFound.php
@@ -0,0 +1,11 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Model\Participant;
+
+use Exception;
+
+class ParticipantNotFound extends Exception
+{
+}