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
What OS do you run?
What exact error do you get in control panel?
Do you see any errors in Plesk error log: /usr/local/psa/admin/logs/httpsd_error_log?