I subscribed to Hinge Preferred Membership but it doesn't work.

On iPhone:

 If you log back into Hinge, you'll be able to regain your Preferred Membership status by tapping "Restore" at the top left of the following screen:

 

On Android: 

From within the Hinge App tap Account > Upgrade to Preferred Membership. 

Tapping upgrade should re-sync your Play Store purchase to our server so that your account reflects your purchase.