I can login to a root shell on my machine (yes or no, or I don’t know):
I’m using a control panel to manage my site (no, or provide the name and version of the control panel):
Hi. I get this error when try to activate SSL from my hosting provider superhosting.bg. They said can’t do anything and to ask you. Will be soon able to use Let’s Encrypt for cyrillic domain names like our: каварна.рф
10x
This is a known bug with the Let's Encrypt CA software. IDN domains with non-IDN TLDs (e.g. каварна.com) work, but IDN TLDs (example.рф ) are currently broken.
A fix is in progress, but for now you just have to wait.