Firefox blocked or disabled Browsing Protection extension with the following error message: Could not be verified for use in Firefox and has been disabled.
This is a bug triggered on 4th May 2019 and it's currently being fixed by Firefox browser's providers. The bug has disabled a lot of add-ons including F-Secure Browsing Protection.
You can use a temporary workaround which has been released here: https://blog.mozilla.org/addons/2019/05/04/update-regarding-add-ons-in-firefox/
Article no: 000011784