You can only make another email address the primary email if you still have access to the current primary address, otherwise you need to create a new Mozilla Account with an email address you can confirm. *https://support.mozilla.org/en-US/kb/ive-lost-my-firefox-sync-account-information ---- You can add a secondary email address and confirm this email address. Once this email address has been confirmed, you can make the secondary email address your primary email address. *https://support.mozilla.org/en-US/kb/change-primary-email-address-firefox-accounts *https://support.mozilla.org/en-US/kb/add-secondary-email-address-firefox-accounts

I notice that you use an older Firefox 116.0.2 version and not the current release (124.0.2). Has your Linux distro reached EOL and no longer receives updates? *https://support.mozilla.org/en-US/kb/update-firefox-latest-release *https://www.mozilla.org/en-US/firefox/all/#product-desktop-release