FS tells me to update my browser.
Lately FS is failing when i browse certain areas as trying to display results of record searches.
I am presented with a warning bar telling me that my browser is not supported a the top of the window and if I follow the link I am directed to page showing supported browsers.
The list includes Firefox which I use and my versions is the latest version 94 for Ubuntu.
Please fix you site.
Your question has been moved to "FamilySearch Questions"
Welcome to the "Community.FamilySearch" Forum.
I am just another 'lowly' User/Patron ...
As an aside ...
Like you ...
I DO NOT think that your problem/issue actually relates to the "Browser" of 'Mozilla' "FireFox".
[ Especially; as, you are using the "Latest" version, of such, like myself & other - without problem/issue ]
As such ...
Please be aware ...
And, although, I have no, knowledge; or experience, with such, just what I have 'heard'/'seem' ...
I humbly would venture to suspect, that your problem/issue, many relate, to the "Operating System", of "Ubuntu" ...
These may not help/assist; but, just in case ...
Here are some "Knowledge Articles", in 'FamilySearch':
I got a message that the site does not support this browser
Which internet browsers are compatible?
How do I keep pop-up blockers from causing issues?
Pages won't open on FamilySearch
It seems like clearing data and cookies solved the issue.