buyer complaint about EBay error messge

[bprbargains]

A potential buyer is citing an error message that says : “Buyer does not have a linked PayPal account”. He’s insisting that this is something I have control over. I’ve checked with eBay support, and they say there’s no problem with the listing. The buyer has sent about 6  emails insisting that I need to revise the listing. Does anyone here have any ideas? Item # 332627403713.

I’ve urged him to contact eBay but he seems disinclined to do that. I’m about to block him because he sounds like trouble at this point. 

So a a related question — if I block him can he continue to email me?

thanks for any and all insight.