Normally my IBM Trusteer works with FireFox via plugin as well as on the Edge browser but after the FireFox addons all broke today I tried Edge and see it is broken too, and so it is appearing that the issue may be within the OS and not FireFox itself. Hope that helps.
Hey there! Sorry you are experiencing problems. This was caused by a certificate issue and we’re currently working on a fix. Updates will be posted on this thread: Certificate issue causing add-ons to be disabled or fail to install