Can't fetch location - but works fine in "Indoor" app


I have download the Unity sdk including the sample test scene provided in the package. As instruction, I have replaced the app ID, token, and location identifier. However when I try to run my app on my phone (iOS) I get the following error :

NSURLConnection finished with error - code -1002
Setting up 1 worker threads for Enlighten.
Thread -> id: 16e8c7000 -> priority: 1
2018-09-26 17:25:15.304254-0400 EstimoteIndoor[1287:325157] can’t fetch location: Error Domain=ESTRequestBaseErrorDomain Code=-1 “NSURLConnection failed.” UserInfo={NSLocalizedFailureReason=unsupported URL, NSLocalizedDescription=NSURLConnection failed., NSLocalizedRecoverySuggestion=Check reason field to verify what kind of error happened.}

When I run the Indoor app, everything works fine and it shows me inside my specified location, which I am.

Any suggestions?