Visual Builder Studio - unable to connect via OAuth

Hi Everybody.

For the last two weeks, we are having an issue with Visual Builder Studio.

We are unable to authenticate against instances that are in different identity domains.

We have got a list of environments under Enviroments which have been registred with OAuth2 in the past.

But now, we cannot renew OAuth access nor we can't create a new environment using OAuth

Because of that, we cannot use Manage Extension Lifecycle utility.

When we try to re-authenticate, it takes to the login page, we click login and then we get redirected to a blank page with the following text: