Paypal Disputes are a head ache as if your the selling where a buyer wants money back, with us, its providing services and people want a refund to get the service free, which is annoying.

Being involved with Paypal is best, call them up, tell them personally the situation, etc....

But, yeah, Paypal won't stop your account over one dispute.

Either suspicious activity on the sellers part or multiple disputes/charge backs/complaints.