There could be a few reasons for this issue:

Payment not processed: The payment might not have been fully processed. Double-check if the payment went through successfully.

Account not updated: Sometimes, it takes a few minutes for your account to reflect the premium status. Try logging out and logging back in to refresh your account.

Different account used: Ensure you are logged into the same account you used to purchase the premium features.

For you have any other questions, please check out the link: Product Feedback