Serviio

Hi guys. Need your help. Dunno what happed, but since tomorrow I can't login into my account. It always says to me "Incorrect credentials. Try again" when I'm tryingto ling from Chrome or Chromium. But with Mozilla everything's good. Just I don't like Mozilla and I think it's not that cool and smooth like Chromium or Chrome. So what I did trying to solve the problem:
1. Defaulted network settings
2. Restarted router
3. Reinstalled Chrome, Chromium
4. Tried to add new users
5. Reinstalled serviio on ubuntu 20.04 again
6. Reinstalled the server then serviio

Stil nothing changed... Helpe me please guys.
audacity

I use Chrome without an issue, so it's not likely the browser. Since you use the credentials successfully with Mozilla, the credentials themselves should be good. I guess the next thing to try is to clear all cache items from the browser. It's possible a reinstall didn't clear a bad cookie or something.

Could you please try Chrome in Incognito mode? This will disable any third party plug-ins and cookies. If it works, you know you need to reset Chrome or Chromium.

Also please go to the Chrome/Chromium settings in the "Autofill" settings and then "Passwords", and make sure the password for your Mediabroswer site isn't cached there (I have sometimes seen Chrome overwrite passwords after changes with old ones...)

Also, even though it is probably not the cause, I would disable ufw on the Ubuntu machine if you are behind a router/firewall (using the "sudo ufw disable" command) at least temporarily to take it out of the equation.