In order to exit from the "Enable Location Services" prompt on iOS try force closing your MoviePass app and relaunch it.
Follow the steps below to force close an app on an iPhone 8 or earlier or an iPhone X (scroll down):
iPhone 8 or earlier
- Double-click the Home button to show your most recently uses apps.
- Swipe right or left to find the app that you want to close.
- Swipe up on the app's preview to close the app.
- From the Home screen, swipe up and pause.
- Firmly touch and hold the app, then tap . You can also swipe up to close the app as soon as you see .
If this doesn't work please delete and redownload the MoviePass app.