Writing a custom chat application for the IPS 4.7 forum engine

Programmer wanted to finish a chat application for a forum with an IPS engine. The chat was partially coded by another programmer, but due to lack of time he decided to pass on the order. The main appearance of the chat is shown in the photos. Experience with the IPS engine is welcome.

Who I'm looking for: programmer (teams/companies - no thanks)

You can: finish / rewrite

Budget: up to PLN 2,000

Advance payment: I no longer give advance payments. Three people signed contracts and sank into the ground. A demand for payment is on its way.

List of all chat functions:

https://pastebin.com/jE8LXb2z