Hi Marcin & Dawid, your experience is certainly not by design. Not sure if you are referring to the Leia appstore or a different app with your login issue, but if it is specific to the Leia appstore, I recommend the following:
- Ensure tablet has latest OTA, perform system update (Settings>System>Software Update)
- If already updated, reboot the tablet.
- Clear storage (long press app icon>Storage & cache) on the Leia appstore
- Attempt to sign in with Google again and if you still encounter an issue, please submit a help form directly in the Leia appstore so our QA team can review the associated logs. To access the in-app help form, tap the three vertical dots at the top right corner of the Home, Explore, or Library Page, select Help and tap Contact Us (if prompted, allow Leia appstore to make and manage phone calls which will only give us access to logs).
Hope Steps 1-3 does the trick, but we are here if it doesn’t!