The whole thing can be hit and miss to a degree, I have molds that parts have fallen out of since day one using PPG Detron paint and I normally do 2 to 4 pulls per wax then I tried a Spies Hecker paint which a so called expert said was the same and 6 hours of peeling and chipping later I had my molds back.
Dont know if you heat your molds but this can be a factor if not cured fast enough the resin can go through the paint a bit and bite onto the mold but if the wax does not like heat one half may have been heated to much.
I have tried about 5 different waxes to get to where I am now ,First was HiLo which was great but fish eye in the paint is a problem, I had problems with dolphin wax and it seems to be a resin issue but I like the resin to much to change and I am now back to a wax I first used 18 years ago and still the same tin K&H PLP10 which is brilliant for fuselages but using it on epoxy tailplane molds the part would always start to come out while joining so I use Dolphin on those molds to keep the parts in them for joining, But on polyester tail molds the K&H is fine.
Don I know some people who swear by freekote but I know three times as many who have had dramas and it is always a big surprise when it fails one half fine the other stuck forever.
Hope some of this helps
Terry