In which Wildbook did the issue occur? Spot A Shark - both the USA and AUS (although we work on the USA platform)
What operating system were you using? Windows 10 Enterprise
What web browser were you using? Initially Chrome, but also attempted on FireFox and Microsoft Edge
What is your role on the site? Admin/Researcher
What happened? https://ncaquariums.wildbook.org/ and http://spotashark.com/ both will not load for a significant amount of time before an error 502: Bad Gateway appears.
What did you expect to happen? The WildBook to load as normal.
What are some steps we could take to reproduce the issue? Visit the two websites. 
Thank you!