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: itolymp.com
I ran this command: certbot --manual certonly
The operating system my web server runs on is (include version): Ubuntu 16
I can login to a root shell on my machine (yes or no, or I don’t know): yes