Are you sure you went to the right website? Pinitech doesn't list a phone number.
https://pinside.com/pinball/biz/directory/1067-pinitech
acebathound is a regular participant on the forums and is very responsive to inquiries.
Stern playboy uses the 6264 NVRAM module. You can find instructions here: https://www.pinitech.com/products/6264_nvram.php