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 suppose the issue is that you use old language pack (from old Plesk version), please try to uninstall previous language pack from ADd/Remove programs and installed anew one. Please use thislink to download it: http://www.parallels.com/download/lp/