I'm sorry the site isn't working for you. Could you first please confirm that you've tried all of the steps here: https://searchtempest.zendesk.com/hc/en-us/articles/205166557-The-results-won-t-load-
If there were any you weren't able to complete, or that you skipped, please let me know.
Also, to narrow down the problem, could you try opening SearchTempest in a different browser, like Edge, Internet Explorer, or Safari? Does it work there?
Next, if you have another device, like a phone, on the same wifi network, please try it from there as well and let me know if that works. Once we've got it narrowed down we can look into solutions. Feel free to email your response to firstname.lastname@example.org if you prefer that to responding publicly here.