There is a sealant for pinholes, to apply before easy-lease? This release works very well, but it the mold has pinholes, it would be necessary a sealant

Easylease claims to be a sealer/release agent all-in-one. I don't know how, as every release I've used requires 2 applications of their respective sealers (Chemlease, marbocote etc). However, I think pinholes are rather large for any sealer to cover. They normally seal microscopic porosity, and they wont even cover 1200 grit scratches.

You are gonna have to fill the pinholes somehow. This depends on what your mould surface is made of though.