You can purchase Flume Pro via Gumroad with the following payment methods:
- Credit card
- PayPal (linked credit card or bank accounts*)
For more information, please visit Gumroad's Help Center.
* If you wish to use your bank account via PayPal, you must ensure that you have enabled your bank account as an available funding source for pre-approved PayPal payments. You can check your funding sources in PayPal's Account Settings.