Purchased the app and still the ads appear – Colorful ABC (Nursery English Alphabets Flashcards for Kids | Montessori Education) Review

I purchased the app from inside the free one. Then another screen appeared requiring confirmation of my credit card, which I thought weird because my card is on file with Apple App Store. So I closed the app, deleted it from my phone, rebooted the phone and then went to the App Store to my Purchased apps list and downloaded/installed it from there. The app is still behaving as the free one did.
Review by kaymsaw on Colorful ABC (Nursery English Alphabets Flashcards for Kids | Montessori Education).