https://support.mozilla.org/en-US/kb/update-firefox-latest-release The issue is you appear to be using the old Firefox 94.0.2 released back on November 22, 2021. A few months ago the web whatsapp site required users to have Firefox 115.0 or later to use it You appear to have Windows 10 or 11 so you should be able to run the current versions of Firefox.