I don’t have linux right now nor a xbox chatpad right now but if I find the time I can try installing this and see what I can do to help. It seems the library is a wrapper of this:

https://www.npmjs.com/package/chatpad

Thanks for all the replies!

I just cleaned the room in depth, specially the couch, and washed the covers. I only saw that one, I suspect it came with the covers.