Error getting token from Google when checking Google Play Integrity on Pixel 6 with CalyxOS

[AZthemute]

Describe the bug
After installing the new version of CalyxOS with microG 6.3.0, I tried the Play Integrity API Checker app, which just gives the error "Error getting token from Google: Unknown internal error." I do not have an unlocked bootloader and Magisk is not installed either.

This isn't much information, but I don't know how to get more from the app. If anyone knows how to check easier what the actual issue is, please let me know and I will provide more info.

The specific app I'm using is https://play.google.com/store/apps/details?id=gr.nikolasspyr.integritycheck&hl=en_GB but no apps I've used that require play integrity work either.

In microG's Google SafetyNet page, there no apps listed that are using SafetyNet, despite the fact that I have multiple apps which do use Play Integrity.

Screenshots

System
Android Version: 15
Custom ROM: CalyxOS 6.3.0
microG version: 0.3.6.244735-27 (e7e4dbc)

Please let me know how to get more information about the specific issue.

[ale5000-git]

I'm not completely sure but maybe it is the problem fixed by #2740

[AZthemute]

I tried another app, this is what I got:

And for safetynet:

All combinations of settings give the result.

I'm not completely sure but maybe it is the problem fixed by #2740

No, I'm past that commit. Again, my microG version is 0.3.6.244735-27 (e7e4dbc). I believe this is the version that came with my updated CalyxOS, but just in case, I have the F-Droid repo added too, and F-Droid reports that there are no updates. Can't seem to find commit e7e4dbc though so I'm not sure what's going on there, maybe just a calyx thing?

[ale5000-git]

The one linked by me is a pull request not yet merged, so it isn't included unless CalyxOS developers have picked it manually.

[AZthemute]

The one linked by me is a pull request not yet merged, so it isn't included unless CalyxOS developers have picked it manually.

Ah, right. Do you know how I can manually update microG on my phone to have that PR? I doubt just installing an APK, even through adb, wouldn't break things.

[ale5000-git]

You have to wait it to get merged and then wait for a new version of microG released.

Or alternatively you have to compile it yourself but then the apk would have a different signature and you will have to remove the previous one (so losing all microG settings and GCM registrations) and install your compiled one.

[AZthemute]

Earlier I managed to get some information about SafetyNet which may or may not be relevant.

The result in microG has a warning sign saying:

Attestation: Warning: CTS profile does not match
Bootloader is not locked

My bootloader is locked and OEM unlocking is disabled in developer settings. Issue persists even after a restart.

Or alternatively you have to compile it yourself but then the apk would have a different signature and you will have to remove the previous one (so losing all microG settings and GCM registrations) and install your compiled one.

Is it not possible to backup the settings and other data?