I clicked on the link to check the site, and my browser stopped at here. Screenshot below. The site is a solid scam. Don't use it.
Trading cryptocurrency against PayPal was never been safe, even for now. It's highly risky to use PayPal just because of their Fund return policy. PayPal is very strict. Users need so many proofs and verifications for stay safe with them. If the service you mentioned, really works fine, then this will be a popular one. Until now, people use localbitcoins for PayPal to bitcoin conversion.