When you click on the link in the email to verify your card, it may take the app a couple of minutes to update and reflect that your card is now verified.
If your card is showing as unverified after you clicked on the link to verify it, try refreshing the app:
Open the app to your list of cards
Scroll to the top
'Pull' the screen down to refresh
Tap on your card again and it should no longer show as unverified.