Hi, Quentin! Yes, I'm sorry to hear about that. =(
Steam sent me an email earlier this month that some TOS changes have happened regarding Adult Content games. Something about either an additional measure or requirement, but we haven't been able to look into the matter yet.
Steam's policy on adult games fluctuates alot, from what I've seen...so I wouldn't be surprised if it becomes available in your country again.
But thank you for bringing it to our attention! We'll look into when we have a chance.