PayPal are the worst and I defy anyone to name a worse one. Their service stinks, the customer support staff are all very friendly but useless. Never believe their 'we'll escalate this'. They don't.
They regularly block accounts and make it extremely difficult to unblock. I totally understand avoiding money laundering and dodgy scammers but I am neither and always keep my account in order. They have regularly blocked several thousand of my cash while they review things - which is stupidly frustrating.