I’m frustrated

504 Gateway Timeout

While trying to sign in from my laptop that I use to work on school assignments I have recently ran into a problem where after signing in the homepage the page does not load and instead it leads to a page that says "504 Gateway Time-out The server didn't respond in time.". I've tried using different web browsers but it does not help and gives the same message.At some times I am able to login and at other times it gives me the 504 message
I attempted logging in from another computer and was able to connect with no problems but I need to be able to use my own computer to do my school work can anyone give me advice on how to fix this
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