I suggest that you stay cautious of buying bitcoin with PayPal, especially from third-party vendors and sites. Only trade with those you know, or coinbase, as has been mentioned here. I would suggest using the currency exchange here or on hackforums, but I know that it offers a way to get scammed, and generally people do not accept PayPal as it is reversible. I would much rather do an exchange in person though, rather than using a vpn, as those can be caught by companies.
Yeah, I have an incident that paypal is asking for some proofs for buying bitcoin using them. Just like this incident
https://bitcointalk.org/index.php?topic=1669085.0 So for me it is better if you are going to moderate using paypal for buying bitcoins.