Sorry, for late reply, just spotted your unanswered question.
Is it the PS5 game bundle sold?
If eBay have informed you the buyer has paid, you do need to send the item to the name and address eBay provide on the order details, send to no other.
Send it fully tracked, use enough insurance cover, and keep that proof of posting safe for at least 6 months.
That's all a seller can do to protect themseleves.
eBay spend millions on advertising to entice new buyers , you will see many with a 0 feedback or brand new account. Also, many just do not leave feedback now a days, it's completely voluntary.
@retrogamingmaster72