This is correct. It's a bug caused by the app version getting ahead of the firmware version. The new app turns on the feature in the 1.6 firmware but doesn't have the mechanism available yet to unlock them. One thing to note, it is my understanding that the 1.7 beta is currently for Android users not iOS users.
Once we can all move to 1.7 firmware it will behave correctly, the yellow circles will be yellow (instead of red as they are when this bug is in effect) and you will be able to unlock with a credit card.
The iOS Beta is currently available for GEO system. I got my invite late last week I believe. Since Apple's App Store handles Beta apps through the Test Flight program, you need to write an email to [email protected] requesting to be added to the Public Beta and provide your Apple Store ID for the invite. You'll receive a note from DJI with an invitation to join DJI Beta Testing group and after providing some basic info about yourself on DJI's beta portal you'll be added to the public beta test group and will be able to download the beta app from Apple's Test Flight.