Don't rely on PayPal. They're less professional than a kid selling juice next to the road.
There are no grace periods with PayPal to give you time to move to another service.
There is never more than a generic reason and stonewalling when they terminate you.
And yes, their decision is always final.
They'll happily terminate your only source of income on a friday afternoon, freeze your funds, then laugh at you as you scramble to get an alternative up and running.
Don't build on PayPal. It's no foundation at all.