Most people using firefox worldwide will have noticed that all their add-ons are not working today.
This is due to a certificate now being out of date.
All sorts of fixes are being touted around the web, but none have worked for me, and a few were obvious malware.
"** IMPORTANT NEWS FOR FIREFOX EXTENSION USERS ** Firefox users of the FBP extension, ought to know there is a bug in the Firefox system that is causing lots of Firefox extensions to be disabled, including FB Purity, basically a security certificate that Mozilla Firefox used to sign the add-ons expired on 4th May 2019 at midnight UTC.
You can read more about it here:
https://www.bleepingcomputer.com/new...dy1Yz4TJqS9yTg "