First of all, I have highlighted several times in the forum how to set conditional visibility using ‘signed in user’, where only those users that fully complete their profile will have a button hidden from view, so it is definitely possible.
As for you visibility issue, I can’t tell if your detail view is filtered or not. Are you actually viewing a row in the table where you are signed in as test@tester.testing, or is the detail screen sitting on a non-existent row because you are signed in with an email that’s not in the table…causing the visibility conditions to actually be comparing to empty column values from a non-existent row?