After a small change to the login subsystem for itslearning, all users are encouraged to close and re-open their webbrowser before they try to login to itslearning again.
The first time, users are also encouraged to login to itslearning directly via https://arcada.itslearning.com/
This applies especially if the old browser session has been active for a longer period of time.
itslearning might also ask for new consent to store basic infirmation about the user. You can safely accept this and the consent will again be stored for further use in the future.