Unable to finish homeassistant-wellbeing configuration

I’ve installed the homeassistant-wellbeing via HACS but in order to get the API key, Access Token and Refresh Token, I’m trying to log in into Electrolux Group Developers with my credits (from the mobile app).
All I get from that website on a login attempt is

Something went wrong

The credits are correct as I can log into the mobile app or Electrolux website with them.
Anyone else have the same problem, or of course preferred - a solution for such issue?

It might be the website.
Try to create a new account.

Tried creating a new account, looks like it is on the dev website, same error message.
I contacted Electrolux support chat and they asked me to e-mail them about the problem. Let’s see…

Got answer from Electrolux support. I needed to be logged in in the mobile app and then do the login. The problem was that the Anddroid app sign-out doesn’t work but just remains hanging so I had to uninstall the app, re-install it, login into app and after that the dev portal login worked