Not receiving payments

Hi there, in our staging webiste we have installed the plugin and configured everything, step by step, carefully following your guide https://docs.wclovers.com/paypal-marketplace/
When we try to simulate an order, everything goes well but the payments flux isn’t working and the order status remains “pending payment”. All the sandbox paypal accounts (partner for the marketplace, business for the vendor and personal for the buyer) don’t register any kind of movement/transaction.
Can you help us?

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