how to clear cached data and cookies

[https://support.mozilla.org/en-US/kb/how-clear-firefox-cache| How to clear the Firefox cache] [https://support.mozilla.org/en-US/kb/clear-cookies-and-site-data-firefox| Clear cookies and site data in Firefox]

The System Details show that you use a rather old Firefox 88.0 version from the Ubuntu repositories. Is your Linux OS no longer supported with updates ? Verify that you meet the System Requirements (GTK+ and GLib) for the current Firefox release. *https://www.mozilla.org/en-US/firefox/system-requirements/ *https://www.mozilla.org/en-US/firefox/107.0/system-requirements/ You can find the full installer of the current Firefox release (106.0.5) 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/106.0.5/releasenotes/