Work through these steps in order. Most cases are solved by step 1 or 2.
1. Close and reopen HeyDrop
HeyDrop checks your subscription every time the app comes back to the screen. Swipe HeyDrop away in the app switcher, wait a few seconds and open it again. Right after a purchase, give it a minute: the App Store sometimes takes a moment to confirm the payment.
2. Make sure you're signed in to the account that bought Pro
Pro belongs to the HeyDrop account that was signed in when you bought it. If you later signed in with a different method (Apple vs Google vs Email), you're in a different, empty account that doesn't have Pro. Go to Settings → Log out, then sign in again with the method you originally used. See "Signing in, login methods and 'my cards are gone'".
3. Check that the subscription is really active
On iPhone open Settings → tap your name → Subscriptions.
HeyDrop is listed as active: the payment went through, so the cause is almost always step 2.
HeyDrop is listed under Expired or isn't there: the purchase didn't complete or was made with another Apple ID. Check the Apple ID email at the top of the Settings screen. Look for an Apple receipt email for HeyDrop.
4. Stuck on "Connecting with App Store. Please wait"
Make sure you have a stable internet connection, then close and reopen the app. Your purchase is safe: it's recorded by Apple even if the screen gets stuck.
5. You see "Your HeyDrop PRO subscription has expired"
This message appears when a card uses a Pro-only design but the account no longer has Pro, for example after a cancellation or a failed renewal.
If you want to keep Pro, renew from the paywall, or fix your payment method in Settings → your name → Payment & Shipping.
If you want to stay on Free: tap Edit → Design, choose the first design (the free one), and tap Save style. Your card works normally again.
6. Member of a company team?
If your company pays for HeyDrop Teams, your team card gets the paid features. Your personal cards still need an individual Pro plan. If your team card shows "Team you are part of needs to be upgraded to perform this action. Please contact the team owner.", your company's Teams plan isn't active. Ask your company's HeyDrop admin to renew it.
Charged twice?
Open Settings → your name → Subscriptions. If you see two HeyDrop subscriptions, or one on another Apple ID in your family, cancel the one you don't need. Then request a refund for that charge at reportaproblem.apple.com.