Error 522 - 523

Hello all, suddenly there is a problem with which I cannot solve on my own. Suddenly the site started to show errors - 522 and 523. When I contacted the support team of my hosting, I was told that they have no any changes on blocking IP addresses Cloudflare. I myself have not made any changes either on the hosting, or in the control panel Cloudflare. In addition, I noticed that the protection against hotlinks is often triggered. This may be a coincidence, but the frequent triggering of hotlink protection coincided with the inaccessibility of the site. Does anyone have any idea what the problem is? How can this problem be solved?
my site -