Hi there,
All you need to do on iCraft is to specify the correct email (email you used to register on PayPal) on this page
https://icraftgifts.com/member_payment_methods.php The rest of the setup has to happen on PayPal.
You need either Business or Premier Account. Your account also needs to be verified, and you need to have the correct profile setting to accept non-PayPal account checkouts. For more information, please visit PayPal
https://www.paypal.com/ca/cgi-bin/webscr?cmd=_registration-run&from=mrb