Is the dev going to add the futa stuff back
Personally, I highly doubt it. I get the feeling that the futa option was not that popular or it was causing more problems than it was worth to deal with.
How do i check, i tried with the mask and fertility potion but it didnt work ? do iu have to let the animaton play out until they cum or just Pressing b does basically the same ? ( using semen bottles doesnt work either)
You need to enable pregnancy in the game settings, just moving the pregnancy chance slider won't change anything. There should be a checkbox called Enable Pregnancy, if that is checked, verify what the pregnancy chance slider is set to. It defaults to a fairly low value, so you might not see it every time you have sex with something.
ALSO:
Some monsters have anal scenes, werewolves seem to love buttsex and blowjobs more than vagoo sex, so you might have to bang them quite a few times before they stick in the right hole AND trigger the pregnancy chance.
If you have tried all of that and still cannot get the character pregnant, make sure that the cum inflation option is less than the pregnancy chance. I think the game RNGs which one it would be and then rolls again against the percent chance of the event.