No password initialized when using fingerprint on android

[layzieshin]

I'll try to explain my problem the best I can.

I installed otpmanager to my nextcloud aio running via docker. Never opened the app on my browser. But I then installed the Android app as I wanted to check it out. I could login with my fingerprint. So no worries there. But when I wanted to login to the app on my browser, it asks me for a password that I have never set.
I asked chatgpt and it said "your description matches the logic used in the provided code".

I would really love to use this app. But it only has advantage over authenticator if I also can use it on my pc/laptop/browser.
Is there anything to get a fix for this?