[DOMAIN MAPPING] can't access subsite/mapped domain

I have a big problem with Domain Mapping. I wanted to change the mapped domain to https and in the process I deleted mapped domain.
Now if I try to go in through the subdirectory, I get a 404 error and redirect loop. So now, I dont know how to get back into that add-on domains /wp-admin to add mapping.

Could you help, I provided all the required info in the ticket.

Thank you