Installation of SSL on kobo toolbox

Hi. I tried to install kobo on https with lets encrypt (given by kobo), However, I get the following error.
Hint: The Certificate Authority failed to download the temporary challenge files created by Certbot. Ensure that the listed domains serve their content from the provided --webroot-path/-w and that files created there can be downloaded from the internet.
If I have my own ssl certificate, how can I use that?

Check you firewall, acme protocol could be denied access to your server.

1 Like

Is there any particular port that need to be opened for acme protocol?

I have an SSL certificate for my domain as well. How can I use that with Kobo?