Yes Aeroc has 2 dads, and he called the omega dad Papa in the English translation. In the Korean raw tho, Papa is actually written as eomoni aka mother. Aeroc's children also call him Papa but in the raw it's actually eomoni too. Maybe they changed the translator so there's inconsistency in the translation. And Korean doesn't really have pronouns, so if the translator didn't read the full story, they just assumed that the mother is a woman (hence the pronoun her). I really hope it's just human error and not because they use MTL to translate.
Yeah Aeroc’s mother has always been male, both in the manwha and novel. It’s just that sometimes the translation is a bit inconsistent in either using “papa” or “mother.” regardless, this story has used mother in a kind of gender-neutral way, using it to reference the birthing parent rather than their sex/gender.

Is the side story uploaded by Bloomingdale official? How did they messed up the translation?! Aeroc never had a mother, he had 2 dads!
I thought he just calling him a mother because that's his papa's role, but he proceed to call him "her". (TT)