We have bedroom, bathroom, classroom and boardroom as one word.
Living room is spelled separately because of the present participle (+ing) in living.

With "chatbox" it's a bit more subjective.
We have chatbot as one word (but litter box as two).
For consistency with chatroom, I'll go with one word.

which we check by checking if the PEP identity is provided.
https://xmpp.org/extensions/xep-0163.html#support

Also, the condition was the opposite of what it should have been.

Appeared to only complicate things...