Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature currently requires accessing the site using the built-in Safari browser.
If you are still using CentOS 7.9, it's time to convert to Alma 8 with the free centos2alma tool by Plesk or Plesk Migrator. Please let us know your experiences or concerns in this thread: CentOS2Alma discussion
I can't say about Plesk 8.1, but according to SWsoft's relsease documentation for Plesk 8.2 it works on the new version, so I recommend you upgrade Plesk first and then SiteBuilder.