com.ovelin.guitartuna wont login with google

[david79111]

Affected app
Name: GuitarTuna
Package id: com.ovelin.guitartuna

Describe the bug
When trying to login with google the google login popup appears on the bottom of the screen trying to connect the account with the guitartuna app and then it dissappears but in the end it doesnt achive anything.

To Reproduce
Steps to reproduce the behavior:

1. Go to guitartuna settings
2. Click on log in with google
3. Wait for microg to do its thing
4. See error

Expected behavior
App should successfully login with google via microg

Screenshots
If applicable, add screenshots to help explain your problem.

System
Android Version: [15]
Custom ROM: [LineageOS 22]

microG
microG Core version: [0.3.3.240913]
microG Self-Check results: [All ticked apart from sms and display over apps because android 15 wont allow me to give these permissions and gsf because latest available gsf from microg isnt updated for android 15 yet and so I cant install it]

Additional context
latest microg companion is also installed

also another issue with the same app (guitartuna) is that the first time i open the app everything apart from google login works but if i close the app and leave my phone for a while maybe half an hour and open the app again it crashes after the first or second splash screen until clear all the data from the app.

[david79111]

Update:
Since microg 3.4 the app doesnt crash anymore.
Login issue still persists, it just looks different now.
App says now authentification issue instead of trying to log in with micro g and failing.