Home assistant login does not work from (remote) browser on laptop

Hi, I set up HAOS on an Odroid XU4 and I can regularly access it through my companion app on my smartphone. I had to set up Cloudflare to do that and everything is running smoothly.

However, I don’t think I have ever tried accessing my HA from my laptop on a browser so far. I started trying that yesterday and I went to the Cloudflare domain I registered and I correctly landed on the login page by home assistant. Then, when I try to enter my login and password I get Invalid username or password while I am sure that these are the correct credentials.

Do you have any ideas on how to solve that?