Why can't I log in to the domen/bitrix admin panel?

Question

1C-Bitrix

Transferred a copy of the site on the server to another directory, another subdomain
Everything is the same, but I can’t log in through the admin panel, I authorize with the
code ($USER->Authorize($ID);) as an administrator on the front, everything is ok
in the admin panel, I
added a new one with the code user with group 1 - does not let through the admin panel

Answer 1

1. there are no rights to the folder with sessions
2. the rights to the sessions are alien
3. The owner and the group on them is different (not to be confused with the rights) chmod is not equal to
chown through file authorization.
3. You have B24, for the same reason, he will not let you do this.
5. Main module settings written by another site (unlikely)