We are discussing the best way to solve the chat problems once and for all.
jwchat is indeed outdated and doesn't, in its current state, work on edge (the new windows 10 browser) at all.
It wouldn't be as simple as replacing jwchat with any modern chat client as we require one that allows us to integrate it into the account management back-end, preferably without having to gut it like a fish.
I'll clarify once we have decided on a course of action.