Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. https://crt.sh/?q=example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.
My domain is:www.forumcoopgame.pl
I ran this command:letsencrypt
It produced this output:pass
My web server is (include version):MyBB 1.8x
The operating system my web server runs on is (include version):Debian 9
My hosting provider, if applicable, is:Contabo
I can login to a root shell on my machine (yes or no, or I don’t know):Yes
I’m using a control panel to manage my site (no, or provide the name and version of the control panel):Webmin
I have a problem with the forum certifica on the mybb engine.
The certificate passes normally but the forum stops working.
The website www.coopgame.pl is without a problem.
However, no forum, I tried to switch port to 443, I have a Webmin vps panel and a few websites.