Continuing the discussion from About the App Configuration category:
Hey Lutrent, is this the same issue you logged about Cross Origin Request Blocked…you had CORs working fine and then it stopped working for some reason? If so, Mark will follow up with you to get it sorted out.
If this is a different issue, what specific message are you getting back from the browser dev tools? Sounds like you’ve done everything correctly. You might want to double check the role associated with the guest user again to make sure permissions are correct for the service you’re calling. Also make sure that you’ve granted access to the app for that role. For a reference example, take a look at the role setup in this tutorial.