Access right issue


it seems I have another access right issue this time on
The access to this site is authorized only to people of egroup th-dep-all
as in

But when I or anybody else try to access the site (even after the login) the access is always decided

I have the feeling (but not sure) that this is since the migration to D9 … or the introduction to the new SSO …

Do you have any suggestion ?

PS I do not know if it is important for debugging but the per content node access control is enabled