Why when I'm on the Firefox app it says Youll need Firefox for this extension

Very nice

I love Avatars

I love roblox

oh my god it let me make my avatar i love this addon if it was a person i would kiss them and hug them thank you so much developer i love you

its like soo sooo ososoososoo oockewlll l ll.,..,, , . lo lll ..

Cannot install any more, used to work but now gives a blurb stating "This add-on is not available on your platform!"

10 Layers hair, we want more

i can't get to get it on mobile it keeps saying download even though i have it downloaded on my phone

I cant download it! ive been seeing on the app and roblox.com and they both dont have btr!