Toshiba A/C integration: How to enter user credentials?

I installed the Toshiba A/C integration from

h4de5/home-assistant-toshiba_ac:main

via HACS. No problem.

But it never asked for the user credentials (username:password) for the Toshiba site. I cannot find the button which would bring me to that dialog.

Can anyone help? I sometimes miss the obvious.

TIA,

Eckart