Just happened today. Scripts went south. And can't access the mturk worker url page. It opens, but doesn't load anything except header. Have disabled scripts, Tampermonkey, and even re-installed Firefox. MTurk worker loads when I start in Safe Mode only. Is this happening to anyone else? FYI: I'm on a MacBook Pro, Mojave 10.14.6.
First step to try for something like this is swapping your DNS settings. I'm honestly not familiar with how on a Mac, but this article will give you a start on what to look for: https://www.howtogeek.com/164981/how-to-switch-to-opendns-or-google-dns-to-speed-up-web-browsing/ Google's docs are a lot more technical in nature but can probably give you a better idea: https://developers.google.com/speed/public-dns/docs/using#mac_os
Thanks for your quick reply Chris. DNS settings -- yikes! -- but good to know. Will let it rest for a day in the hopes it'll fix itself before I dip my toe in the DNS pool!