I closed my account when they discovered suspicious activity in my account, at least claimed so but apart from locking me out until I prove I am me with photo ID copy and independent sources about my address (bank statement, utility bill, ...), basically collecting more data on me, they did not make any steps tracking down this suspicious activity, not even explaining what it was, they did not report it to the authorities! It was complete unresponsiveness when I asked for details on the event, asking about reference to the case at the authorities, told them that I will report it myself to the authorities (someone doing something to my money!!) and need some info, nothing, complete silence!
My conclusion that they simply lied to my face!
I was around the time when PayPal got some bank like regulatory status in Ireland and might have needed some more data so they forced me to provide through a bullst claim. At least this is the only scenario I find feasible. I had very little money there, after gaining access again (giving them a lot of data on me) there was no sign of any activity there that not belonged to me, nothing.
I decided that their practices are shady and I will never ever trust them!
(I did not report it eventually to the authorities, even the preparation for it took time with little supporting material, and I already had an unrelated matter to tackle, it was simpler leaving them and spread their reputation. PayPal definitely did not bother reporting it as I was never approached or questioned about the suspicious activity in my account ever. It was about 10 years ago btw.)