I had set up a page at mydomain.com/admin/
containing admin.php and some other admin related php files.
It worked yesterday, but today without any updates or changes - I suddenly get a wp-404 page not found message when trying to access the admin area. No matter what I do. The files are there. And I find them easily.
I have tried to find a fix, but I only find old (7-8 years ago) fix'es and it wont work for me.
Is there a clever and easy way to fix this?