Hello

Screenshots 1,2 Windows7. Maybe, a test, if you wish to test User Agent Switcher https://addons.mozilla.org/firefox/addon/uaswitcher Screenshot 3, as far as i'm concerned, i installed Linux in dual-boot with Windows7

Thank you, yes I got the exact same thing as your first screenshot, I'll test the addon you proposed but I would like to understand what's wrong and if possible a solution that doesn't requires an addon.

Hi

While we are continuing to stretch support of Firefox 115, it may be the case that various websites will not support a version of Firefox that old.

https://support.mozilla.org/en-US/questions/1576403

Take a look at this other question https://connect.mozilla.org/t5/discussions/windows-7-support-with-firefox-esr-115-x/m-p/115038/highlight/true#M44880

https://support.mozilla.org/en-US/kb/firefox-users-windows-7-8-and-81-moving-extended-support

Maybe, the reason, Firefox 115, and, operating system.

Below, a test.

Below, to continue the test, Firefox 115, and, Windows10.

Thank you, the useragent string override fixes the issue, I'll stick to that for now.

Hello,

I am glad to hear that your problem has been resolved. If you haven't already, please select the answer that solves the problem. This will help other users with similar problems find the solution.

Thank you for contacting Mozilla Support.