Problem with second account, automatically switches to primary account

Hi !Friendica Support
I am the admin of my #friendica instance,I registered an additional account . But when I go to switch to my secondary account, it automatically switches back to the primary account .

A few months ago everything was working fine, then suddenly I had this problem, I thought it was an account issue and deleted it. But it always happens to me

What could it be?

VideoThe account is not even in the delegation