Hi I have had a look at Roboform's site and have seen these [https://ftp.mozilla.org/pub/firefox/releases/42.0/win32/en-US/ instructions] as to how to install the software. It may be the case that the Roboform add-on has not been "signed" to work properly with Firefox going forwards. Add-on developers have been made aware of this issue so I recommend you speak to Roboform and clarify with them as to when they will get this fixed in their software. It may be the case that the software is designed to work with Firefox for Desktop and not Firefox for Android. I recommend you check this with Roboform via their support channels. I hope this helps, but if not, please come back here and we can look into a different solution for you.