How to protect a buyer in PayPal when paying for an invoice?

Question

PayPal

I found a seller in the UK, through a forum, he does not have a website and, accordingly, a "buy with PayPal" button. He is ready to make a transaction through PayPal. As I understand it, he will issue me an invoice via PapPal , and I will see this invoice in my personal account and will have to confirm the payment. So the question is: will the " Purchase Protection Program
" apply to this transaction in this case ?