TWx 7.2 asks for Username and Password when AppKey is in URL
I have a microcontroller that is sending REST calls to ThingWorx with the AppKey in the URL. I have also been duplicating the call on Chrome's ARC. It has been working for a couple months and this week it suddenly started asking for username and password when I enter the call through ARC. All of the microcontroller calls are now failing with a 401 error. We checked if any of our TWx settings have changed over the last week and they are all the same. We did add a few users last week but the calls were still going through after we added them.
Thank you for any suggestions or help.

