I strongly recommend withdrawing all your funds from NitrogenSports as soon as possible. Bitcoin gambling casinos was recently given the chance to prove their long term good intentions by returning users Bitcoin Cash. NitrogenSports was one of few companies not taking this chance. Big sites has ran away with user funds before. Funds at NitrogenSports are at huge risk.
Nitrogensports already warned everyone before the split by sharing the blog. Imo that's a good intention already because some casinos don't warn their users. Nitro won't run away with everyone's balance they're already making a lot more.
Samarkand is right I think nitro still needs time because the split just happened 2 weeks ago. They already started renewing everyone's deposit address few days ago maybe they will start giving them out soon.