Server does not seem to be able to handle multiple incoming IP requests?

[Weilin37]

I am hosting the server on an EC2 instance. I then make a request from another computer and it seems to work fine. However, when a second computer tries to make a request, the code hangs and the request doesn't seem to be able to make it to the server. Weirdly enough, the original computer will start having the same problem too.

I can make as many requests as I want from the first computer. But the moment the second computer tries to make a request everything just breaks. Any thoughts on what is causing the issue?