@duga
Unfortunately that is not possible. Carefully check your login details for the website because they are exactly the same as AmiStore.
Updater of course isn't working either. But Amistore login still works after deleting the locally saved username + password, and manually typing in the same username and password used for Updater and Amisphere. It's almost like the Amistore login (that is working fine) is blocking other login sessions through Updater/Amisphere. All login attempts are done from the same public IP address from different machines (Amiga, PC and Android). How long is a login session active? 5 minutes? 60 minutes? How many parallell login sessions are allowed for one user account?
Update: now I can't login to Amistore anymore. I guess I'll have to wait for the e-mail for getting a new password.