Has your Linux distro reached EOL and no longer is receiving updates since you are using a very outdated Firefox 87.0 version? It is quite possible/likely that more and more websites no longer work with this version. There might be error messages in the Web Console. *https://firefox-source-docs.mozilla.org/devtools-user/web_console/ You can verify that you meet the System Requirements (GTK+ and GLib) for the current Firefox release. *https://www.mozilla.org/en-US/firefox/122.0/system-requirements/ You can find the full installer of the current Firefox release (122.0) in all languages and all operating systems here: *https://www.mozilla.org/en-US/firefox/all/#product-desktop-release *https://www.mozilla.org/en-US/firefox/122.0/releasenotes/