why is my payment processing and then being refunded by ebay

I am sending a payment through and ebay keep advising the first instalment via Afterpay is being refunded and to make the payment again

This has happened on 4-5 ocassions for the one purchase  - the funds are available

The payment is processed and advised by ebay that the payments is okay 

Then an email from ebay saying that payment is still required and a refund has gone onto my afterpay account

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This keeps happening to me
I can’t seem to use Afterpay on eBay anymore is there any update