This usually happens when a client's payment method becomes unverified and your work did not qualify for Upwork's Payment Protection. You will be receiving a notification with more detailed information about this today.
yes, the client payment method was unverfied, I asked her to verfiy it and she said that she'll do it...
But Why did upwork add it to the payments then make a refund ?
I checked the contract and it's still unverfied.