Web Hook URL for Testing

Hi,
I have set up your plugin for WooCommerce.
I also have created a dev account on Rapyd Developers. ( https://dashboard.rapyd.net/developers/ ).

I receive the funds in my Rapyd Dashboard however, in WooCommerce my order stays pending and then gets canceled after the given time.

I also need to set the Rapyd WebHook URL ( https://d.pr/i/MnbLfx ).

I need help with it ASAP?