Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Dear Pleskians! The Plesk Forum will be undergoing scheduled maintenance on Monday, 7th of July, at 9:00 AM UTC. The expected maintenance window is 2 hours.
Thank you in advance for your patience and understanding on the matter.
Since Server Name Indication technology is supported by Plesk, each site may have their own SSL certificate even if they reside on the same IP. If no certificate explicitly selected for a domain (Websites & Domains > click on a domain name), then default certificate of IP (Tools & Settings > IP addresses > click an IP address) is used. This will be "default certificate" if nothing else is provided.
My guess is that there must be an IP address with "default certificate" as default and there must be 3 domains on that address which don't have any other certificate selected.
If it won't help you probably need to contact support service for database scan and discovery which domains may be using this certificate.
I searched the database by myself and found out that the default certificate is used by three different IP addresses, which are not used by any domain. That's why I could not find a domain using that certificate.