The site is no longer accessible via https, but everything opens via http. What could have happened?

Question

MODX

Good morning.

The site suddenly stopped working on the https protocol. HTTP pages open, but pictures are not loaded. Images are available via http. http admin gives: Site temporarily unavailable!
What could have suddenly happened to him?
UPD. Thanks, it's all good. Backend problems.
Website: https://avtomotorika.com/

Answer 1

is the certificate expired?
without details about the backend, it is unlikely that anyone will tell you something

Answer 2

Change to
if the question is only about pictures
For https problem, this is to the hoster, support at the host level is disabled