The requested URL / was not found on this server (after no change)

Hi! My website wine-teach. com randomly stopped opening from yesterday, although I didn’t make any changes.

Two days ago everything worked properly. My website is located on this IP:

Here you can see that all files are still on a webserver:

This is my domain DNS records:

What could have changed in itself to make this error?

UPD: A two-day backup of files and databases helped, but this does not solve the problem. Prior to this, very often the site did not open the first time with the error "503". Do I understand correctly that these are technical problems on the part of GoDaddy or can it be something else?