Subscriptions

I suspect this is a payment issue. You have to pay for even pending purchases. You can unsubscribe but if Apple has determined you owe anything then you still have to pay. If you have a unpaid pending purchase blocking things then you can't do anything you pay for it.

If you can’t download or update apps on your iPhone or iPad - https://support.apple.com/HT207165

- "You might need to have a payment method on file, even if the app that you want to download is free." My interpretation of this in the context in which it has been presented is if you have something else on your account that requires a payment method, such as a subscription, and your current payment method is not working then Apple won't let you download even free things until you fix the payment method. This is explained in this document, 'If your payment method is declined in the App Store or iTunes Store' - https://support.apple.com/HT203005

This document explains how to 'Change, add, [review,] or remove Apple ID payment methods' on an Apple mobile device, a Mac, or a PC; click here --> https://support.apple.com/HT201266

- If you are updating an old card and have ongoing subscriptions you may need to first add the new card and make it the primary payment method before deleting the old card.

'If you can't remove your last payment method or use no payment method with your Apple ID' click here --> https://support.apple.com/HT203905

If you still have problems Click here --> https://support.apple.com/choose-country-region/media-services Select your country, then a product. If you don't see one that handles your issue then keep experimenting with selections until you reach one that gets you a chat session or a telephone call and get the representative to redirect you.

or:

Contact Apple for support and service --> "See a list of Apple phone numbers around the world." - https://support.apple.com/HT201232

Additional resources:

'Payment methods that you can use with your Apple ID' --> https://support.apple.com/HT202631

If the subscription tried to charge you but failed for any reason, you now owe that charge, and your account is no longer in good standing. You will need to let it complete the charge correctly before you can access the App Store services again.

Once it's complete, you can contact Apple support to request a refund for it.