Bug with Firefox disabling addons

[Giftheck]

Currently suffering from this myself, Firefox has an issue that has arisen on all platforms where your addons are marked as not meeting Firefox standards and are thus disabled.

Details and hotfix here: https://blog.mozilla.org/addons/2019/05/04/update-regarding-add-ons-in-firefox/

[Led]

Yeah, mine just popped up with that error.  And I have to turn the studies back on...