@bigkuhuna, that looks like a mismatched certificate error. If you have a Let's Encrypt certificate installed on your server, it's possible your browser cached the self-signed certificate and now that there is a new certificate, it's reading both and thus throwing the mismatch. As @ohsen2016 stated, clearing your browser cache will more than likely solve that issue.
This really depends on the hardware and your connection to the server from your location. I have had Hetzner machines before that typically don't play well with my ISP and loading times can be painfully slow... in these cases, this is obviously a simple matter of your connection over seas or from wherever you are.