I'm expert in node.js, socket.io. Developed so many chat apps using this. Also using this i developed videocalling feature with webrtc.
I can fix your bug quicly.
Looking forward for your reply.
I am a professional Node JS developer who has experience in the kind of project you are doing. As such I think I am the perfect candidate for solving your problem. I have taken a look at your Github and I am pretty sure I can get the job done in a day. I also ask for as little money as I can.