Xeno (chat box, screenshare, knowledge base..free?)

Came across an app called xeno when looking for a chat box : https://xenoapp.com/features/

It has a full featured free plan, only catch appears to be a relatively discrete ‘powered by xeno’ at the base of the chat.

There isn’t much about it online, seems to be pretty new.
Wondering if anybody has tried this and knows if it plays well with Bubble apps??