[dev_1239]

When going through the /signup page, upon clicking Sign Up the circle spins forever and ever. However, it has created the account without any indication to the user that it was successful.
Any idea how to fix that?

I try to understand. You could explain your insideness in another way.

I understand that it keeps trying to take the next step after making a registration but it doesn't and it gives you a 504 error from Ngix

First check in the browser console if you have a communication route between the client and the server, then check the PHP logs to verify that a link is not broken and finally you can check your modsecurity server and see if you are not blocking your FOOSBILLING application by mistake