Protogens are an "Open" race and are terribly micro managed, if you add any unique traits to a protogen that aren't completely vanilla, even slightly different body type, horns, wings, extra set of ears, etc. the creator throws a huge fit and tells you can't do it and that it's an "Illegal design" (in the case of different body types) or Tells you that you have to pay them like $80 and wait 7 months for confirmation (on each unique feature and you can only have two)
also until somewhat recently the creator had a complete ban of ANY NSFW content relating to Protogens or even just suggestive content, I feel like they only relented in lifting the ban because they realize people are starting to get annoyed with them and are just completely ignoring them