Ok,
I have:
- Removed SSL from Hosting Settings (unchecked the box and changing the Certificate)
- deleted the certificate from SSL/TLS Certificates
- Restarted Plesk (service sw-engine restart && service sw-cp-server restart)
- Re-enabled SSL in Hosting Settings
- Selected Let’s Encrypt in SSL/TLS Certificates
- Checked Hosting Settings (showed “Let’s Encrypt twojackspizza.com (twojackspizza.com)” selected)
@stevenzhu - I am not sure exactly what you mean by “decide the PEM”. Also, I can look at the certificate, but am not sure how to determine if it is the right one. I have only ever seen one certificate in there at any given time.