Im grateful for you suggestions and your calls for me to learn something. I'm sure they are well meaning and not as patronising as they sound at first.
The facts are : we don't get many Firefox users. As far as we know most things are functional if not 100% visually correct. We don't tell anyone not to use Firefox. I personally have stopped using Firefox because of broken apps (not mine specifically).
I don't need to defend my position here. I don't care why apps are not working, they just aren't and I need them. Anyone can scream and cry how this is not firefoxes fault - nobody cares while the apps still aren't running.