Problem with downloading and updating apps.
Last year I owed Instagram 8€ for a AD for my business. After a month or two i couldn't download or update any apps because of a message "there is a billing problem with a previous purchase", I paid the money I owed to Instagram and still nothing worked, I changed the payment method and got a new card in my bank and still nothing, the same message appears.
I checked the payment history and I didn't owe anything from all my purchases.
How do I fix this?
Most of my apps are out of date and I can't use them anymore.
iPhone 6, iOS 12