Cancelled order that is being shipped. $250

Level 1
I shipped a laptop way before the deadline (they even extended it for 2 days longer) and USPS never scanned it. Now the order was cancelled, buyer stopped replying and USPS cannot do an intercept.
$250 f***** dollars because OfferUp’s ridiculously absurd lack of control. Even eBay has better protection than this garbage. Free Macbook for that person at least right? The email replies I get basically just apologetically wish me best of luck. I wish I werent angry but neither USPS or OfferUp are even trying to help me.
Level 9
Go to post office directly. You have to pay for intercept and it depends on the progress of package. Def worth $250 to try before it is delivered