I have tried to access Reddit today with my personal laptop and it keeps giving 504 errors, “504 Gateway Timeout” or “openResty error.” This is the case regardless of browser - Chrome or Firefox.
But I have no problem accessing Reddit with my work laptop, or with my smartphone. How does that work?
It almost sounds like you’ve got a virus running a web proxy or something similar. Some of these bugs monitor your web usage and insert their own ads. If you were actually not connecting to reddit, you’d be getting a specific reddit error page. Since you’re not, something is intercepting your connections, and a proxy virus makes as much sense as anything.
Do some antivirus scans, and download and run Malware Bytes. Then report back.