Modification is required to the already running node.js +socket.io math multiplayer game (websockets)

I have a node.js +[login to view URL] math multiplayer game running with websockets hosted in a vps server , and its database is helped by mongoDB. The program is working fine, but it is lacking some requirements such as poor authentication at login. I would like a modification to the behaviour of this program. In a nutshell, it should almost work like the World Maths Day on youtube: [login to view URL] [login to view URL] I will share the link to the game on request in a chat if I find the freelancer reasonable and efficient (please don’t ask the code). You may work on my desktop using a remote connection software in which case I am ready to pay on a hourly basis. Some freelancers are already in touch, saying that they would do a trial on my desktop and giving an interesting lower budget with 1st 1 hour free. Please kindly avoiding placing a placeholder bid to attract my attention. You need to be very good in node.js +socket.io+mongoDB and also websockets. Please feel free to chat with 1. What you would do 2. Your rate per hour on my pc or fixed rate.