Change your billing info on the App Store

To change the billing info associated with your OfficeSuite license/subscription made through the App Store do the following:

On your iPhone, iPad, or Apple Vision Pro:

1. Open the Settings app.
2. Tap your name.
3. Tap Payment & Shipping. You might be asked to sign in with your Apple ID.
4. Tap Add Payment Method.

5. Enter the payment method details, then tap Done.

On your Mac device: 

1. Open the App Store.
2. Click your name. If your name doesn't appear, click the Sign In button, sign in with your Apple ID, then click your name.
3. Click Account Settings. You might be asked to sign in with your Apple ID.
4. Next to Payment Information, click Manage Payments.
5. Click Add Payment.
6. Enter the payment method details, then click Done.