doc: add profile switching limitation to known issues

[KRKNWK-15679]

Signed-off-by: Krzysztof Taborowski <[email protected]>

doc/sidewalk_known_issues.rst

@@ -5,9 +5,9 @@ Known issues
 
 See the list of known issues that are valid for the current state of development.
 
-02/01/2023
-----------
-* "KRKNWK-16402: DFU failure on unregistered devices.
+v1.14.3
+-------
+* KRKNWK-16402: DFU failure on unregistered devices.
     Workaround is to enter the DFU mode when the device is registered.
 
 * KRKNWK-14583: Bus fault after flash, before the :file:`Nordic_MFG.hex` data flash.
@@ -18,6 +18,9 @@ See the list of known issues that are valid for the current state of development
     The non-resolvable private address (NRPA) cannot be set in the connectable mode for Bluetooth LE.
     Currently there is no workaround for this issue.
 
+* Dynamic FSK-WAN Profile switching from 2 to 1 is prohibited.
+    Currently there is no workaround for this issue.
+
 * Note for users with multiple Echo devices:
     If you have multiple Echo devices registered under a single Amazon account, only one of those devices will be able to operate as an FSK gateway even if other devices have the same capability.
     If you need to operate multiple FSK gateways, we recommend setting them up under separate Amazon accounts.