Does Profreehost allow Let's encrypt?

Hello.
I am trying to get SSL certificate on my website with Really Simple SSL Wordpress plugin. However at one of the steps I get an error: "Authorization not completed yet". I know that I should ask in their support forums, but this issue can be because my hosting provider doesn't allow Let's encrypt. So, does Profreehost allow Let's encrypt? And if no, can you let me use it please?