[Bug]: Invalid or unsupported payment method when refunding via WooCommerce

[JCZwier]

What is your BTCPay version?

I'm running BTCPay v1.13.7+83c948d12 (Altcoins)

How did you deploy BTCPay Server?

I'm running BTCPay Server on a Docker instance

What happened?

I get an error when I try to refund an order in WooCommerce that was paid using BTCPay. This only happens when I click 'Refund $... via BTCPay'. The error is below.

How did you encounter this bug?

1. I enter the refund information in WooCommerce. 2. I click on 'Refund $... via BTCPay. 3. I get the error message that is pasted below.

Relevant log output

Exception creating pull payment: Error during POST to https://example.com/api/v1/stores/6BSKiz4zRqydQXtaYo1jj3MLDgLdqC3ZjtEhR5YqU5Bt/pull-payments. Got response (422): [{"path":"PaymentMethods[1]","message":"Invalid or unsupported payment method"}]

What browser do you use?

Firefox 132.0.1

Additional information

No response

Are you sure this is a bug report?

• I confirm this is a bug report

[pavlenex]

Which version of WooCommerce plugin are you using?
cc @ndeet

[JCZwier]

@pavlenex I'm using version 2.7.0.

[ndeet]

Hey @JCZwier tried to reproduce the error and found a different one but with BTCPay Server 2.0.

With BTCPay 1.13.x (which you seem to use) I could not reproduce your error. Your errors suggests that the payment methods passed to the pull payments endpoint is a nested array which is a bit weird. Can you give me more information about your setup so I can try to reproduce?

• What PHP version do you use?
• What settings do you have enabled on BTCPay Settings (on WooCommerce)
• What BTCPay Server version are you running?
• did you disable the original Payment method maybe? (in WooCommerce -> Settings -> Payments)?

Thank you.

[JCZwier]

@ndeet To answer your questions:

• On the WordPress server I'm using PHP version 8.1.18.
• The only setting I have enabled is 'Protect order status'.
• I'm running BTCPay Server v1.13.7+83c948d12 (Altcoins).
• The order was initially paid with BTCPay, and this payment option is enabled.