Can't reply to classified

So I see something I want in parts for sale but I don't have privileges ?
Does not compute, please explain
Thanks

 

Just PM the seller

If it is about my moon tank, still available

 

Thanks, I did, maybe he sold it and he's not answering. ?

 

Thanks for the link, that's what I did.
As I said maybe it's sold and the seller doesn't reply.