Sharing personal details with anyone like phone number, address, bank account, … are prohibited on fiverr.
If it’s between you and fiverr then, fiverr don’t ask you your email password, Bank card pins,…etc. if you ask for help about your payoneer or paypal card which is linked to your fiverr account then Fiverr CS request you to contact with their CS. Fiverr don’t interfere there.
Fiverr is providing money security between seller and buyers !
it’s world largest online marketplace and day by day fiverr increasing its circumference since 2010.