On the right it appears you are using the old EOL Windows XP ?

If so then the most current version of Firefox you can run (on WinXP and Vista) is (32-bit) Fx 52.9.0 ESR. https://archive.mozilla.org/pub/firefox/releases/52.9.0esr/win32/ other locales are at https://archive.mozilla.org/pub/firefox/releases/52.9.0esr/win32/

https://support.mozilla.org/en-US/kb/end-support-windows-xp-and-vista

If you are using Windows 7 or later then download from www.mozilla.org/firefox/all/

If you are using Win7 or later then you may need to fix your UserAgent. https://support.mozilla.org/en-US/kb/how-reset-default-user-agent-firefox

The upcoming Firefox 115 ESR will be the latest to still support Windows 7, 8, 8.1, and macOS 10.12, 10.13, 10.14 https://support.mozilla.org/en-US/kb/firefox-users-windows-7-8-and-81-moving-extended-support https://support.mozilla.org/en-US/kb/firefox-users-macos-1012-1013-1014-moving-to-extended-support

Are you using a special third-party build since you have "Mypal/68.12.3" appended to the user agent ?