If you are facing difficulties in changing your payment method for HBO Max in Canada, there are a few steps you can take to address the issue:
Make sure that your payment methods are from a bank based in the USA.
Verify that your chosen payment method allows for recurring online payments. Some prepaid cards may not support this feature, which could prevent you from updating your payment information.
By ensuring that your payment methods meet these requirements, you can increase the likelihood of successfully changing your payment method for HBO Max in Canada.