To log in to your Premium account on iOS, just follow the steps below that correspond to how you purchased your subscription.

If you purchased Premium through the desktop extension (Paddle):

1. Open the ABP for iOS app.
2. Tap Settings > Create Account. 
3. Enter the email associated with your Premium subscription.
4. Tap Continue.
5. Check your email for the verification code and enter it in the field provided.
6. Tap Submit.

If you purchased Premium through the ABP app (Apple):

1. Open the ABP for iOS app.
2. Tap Settings > Manage App Store Subscription. 
3. Tap Restore Purchase.

When successfully logged in, the Premium badge will appear on the Home screen: