Footer on the site, which has not changed a few years and worked steadily, suddenly disappeared, although in the settings of the theme, it is active, but for some reason is not displayed. Please advise what may be the reason for its disappearance. Thanks in advance

Hi, I was customizing the shell. Suddenly I left the counter and could no longer enter the counter using the admin To enter.
I couldn’t fix the problem by recovering, I couldn’t fix the problem by resetting the password, and the problem was not solved by manually updating WordPress.
After reviewing the support hosts, I came to the conclusion that there is a problem with the skin. Please help me
Needless to say, I disabled all plugins, but the problem didn’t go away
Thank you in advance