No grow patern will determine male/female, on week 3-4 you can guess by plant structure , later preflowers gives good hint, but only actual transition to flower will tell you for sure is it girl or boy.
Bag seed is a potential hermie.
2 from 12 is very bad. Try to text them, o find
@James here, he represents RQS. I had my personal issues with him and that house, but any breeder cares about reputation, you should get new, but not guaranteed ;)))
My best rate of sprout - seed straight to soil, no presoaking or other shit.
Good luck !