On your menu screen, you’ll see Bumble Boost, Bumble Premium, and our other paid features located underneath your profile photo. Here, you can click on the subscription you'd like to sign up for and choose your recurring subscription duration.

Alternatively, you can tap on the pixelated square in your match queue to view your Liked You. There you will see the option to subscribe to Bumble Premium. 

Finally, you can click on one of the silver circles you see around the photos of your expired connections. These are the expired matches that you missed!