It looks like it’s very close to working in any case, so I’m sure we can get it sorted out. But as you mentioned, GoDaddy doesn’t seem to be fond of people using externally-obtained certificates rather than buying them from GoDaddy. This might be a real inconvenience as long as you keep using GoDaddy’s hosting; as you may know, Let’s Encrypt certificates are only valid for 90 days, and so we encourage everyone to try to find a way to automate the renewal process, which doesn’t seem like it would be straightforward to do in this setup.