Sold mac computer for 1150 ebay advised to ship, a...

Sold mac computer for 1150 ebay advised to ship, apparently fraudulent buyer, removed from ebay. ebay not taking responsibility. lost item, no payment
On Sep 15 I sold macbook to jovfra4 of ebay. Upon sale ebay sent me a prompt via app stating "its time to ship the item" Sent via UPS and delivered on sat 16. Monday 18 I receive an email from ebay that buyer is fraudulent and has been removed from ebay. I call paypall on monday. advised me that was paid with and echeck and it will take 3 days to clear, never clears. on sep 22 i receive and email from paypal stating that the payment was made and cancelled on September 15. I have called ebay and paypal multiple times and cant help me at all secondary to buyer not being part ebay anymore but he was at the time of the sale. They have advised me to go to the persons address to claim money or item. Ebay should not let these people place bids without checking backgrounds. how can ebay allow this and blow sellers away. I got this buyer from ebay not randomly on the street. pretty much ebay says they cannot help me, nor report the buyer because he is no longer part of ebay. Seriously they were kicked out of ebay now im left without the item and without money. Ebay should not allow people like this bid, and also, they should not send an app prompt advising sellers to ship and then, 2 days later say that buyer has being removed, lets relist ur item. ebay even sent me a charge for 10%

if ebay would have never sent me an app prompt to ship item, i would have never lost the item. i was advised to send item by them and they advised me that the buyer was fraudulent too late. i believe that they are responsible for this transaction. i cant believe that i can not be helped nor report this buyer simply because he is not registered any more secondary to ebay kicking him out, taking ZERO responsibilities of their actions and not helping customers.

I hope the BBB can help me to
get buyer reported
have this resolved full or partial payment.
report done to attorney general as advised and
ic3.gov
I went thru BBB no help. ebay sent an app notification to ship item and DO NOT become responsible for their advise.