Hi Murage,

Thanks for posting in the Community! Are you trying to update your QuickBooks Online subscription payment details? If yes, you can follow these steps. 

1. Sign in to QuickBooks Online as a primary admin.
2. Select Settings ⚙, then Account and Settings.
3. Select Billing & Subscription.
4. Next to your payment method, select Edit ✎.
5. Select your preferred payment method and enter the necessary details.
6. If paying by card or direct debit, check that your billing address is correct.
7. When you're done, select Save and use.

You can also check these articles for your future reference: 

Manage billing, payment, and subscription info in QuickBooks Online

Can I change the account's country?

Feel free to drop a comment below if you have any other questions. Have a great day!