I am unable to login in App Lounge via an Anonymous account
Solution: Clear App Lounge’s data by navigating to Settings > Apps > App Lounge > Storage & cache > Clear storage, then wait for a while before you use the Anonymous account login again.
Just ran into same issue, when wanting to install a new app. Have used my Fairphone 5 with e/os and App Lounge since its launch without issues. Clearing storage (plus restarting phone, etc) does not help. Perhaps a server down?
I have noticed that since today I am also experiencing the same problem on my main device (FP3). On a second device i have no problems with the app lounge.