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
How to fix ssl_error_rx_record_too_long in Firefox? Attempt HTTP: No proxy setting
Update Firefox
Disable Antivirus
Open Firefox in safe mode
Turn Off Firefox Add-ons
Refresh the Browser
Set security.tls.version.max to 0
Use a VPN
I found this solution here