I used to use them and they would lock the same payment for 24 hours at a time for "security reasons" and every time I would resend same thing would happen and they would not know why and would not fix it. Okay no problem. this went on for weeks and there was no figuriing it out just wait and maybe it will unlock. sometimes money was locked for 48-72 hours. and this was a balance payment. then there was issues withdrawing when it was time to give up. That they got working quickly. You have to remember the longer they have your money the longer they can invest it and use it them selves.
Paypal is not with out their issues, but there support is better, they can almost always tell you why a problem is happening and if they cannot fix they will make you feel reassured they are trying.
But owe money to paypal and your account negative? Actively trying to pay off that debt? Paypal will close your account so you cannot pay them back. Seen that too many times.
More people get scammed on paypal because its more popular.