Compatilbe add-on mark as uncompatible?

[sizvix (simon g)]

Hello
I made an add-on there is 2 years ago, very simple but usefful for me.

HideIt – Adoptez cette extension pour 🦊 Firefox (fr)

But it’s indicate uncompatible on a friend’s Firefox … He use windows , but I don’t indicate uncompatible to windows :-/