Hi,
Thanks for your feedback!
What you're currently experiencing is related to an issue with an expired certificate in Firefox, causing ALL add-ons to be turned off.
Firefox has now pushed a fix for this, which should be installed automatically for you. You can find more information on it here: https://blog.mozilla.org/addons/2019/05/04/update-regarding-add-ons-in-firefox/

If this issue still exists past Sunday, please reach out to us via support@adblockplus.org!
Thanks,
Jessy
ABP Support Team

Hi there,
Thank you for your feedback! We appreciate your love for Adblock Plus!
Firefox isn't actually actively removing us. They were experiencing a widespread issue today due to a certification issue on their side.
Mozilla has already pushed an update and it should be fixed within the next couple of hours: https://blog.mozilla.org/addons/2019/05/04/update-regarding-add-ons-in-firefox/

Jessy
ABP Support Team