Support on_behalf_of-style payments

[kennethormandy]

It’s possible to get an error about on_behalf_of when trying to pay a payee account that has been restricted in Stripe. This can happen if they don’t fill in or remove some of their required information like addresses or identification confirmation.

Right now, the error message is presented to the end customer during checkout.

Some possibilities:

• Provide clearer error message to the end customer
• Check the account’s ability to make payments earlier, and if it can’t…
  • Don’t even make it possible to checkout with their products?
  • Pay the entire amount to the parent account instead, and maybe send an email about it?
  • Make this configurable through a setting?

[kennethormandy]

Currently on_behalf_of is set to false for all orders supported by the plugin, so this should only need to be addressed once it becomes possible to opt-into that setting.