Risking to sound redundant, though with no ill intention or any attempt to sound condescending, I'll repeat: the investigation is very likely requested by the provider and conducted by the provider. Thus, it is out of Shuffle's hand. Only the provider has an answer on when the investigation finished.
Its has been so long no reply from officials can you mention them to look into this case
Again, just to be very clear, the bets is under review by their game provider, not by them. The speed of the official reply with verdict is not on their hand. I hope you can understand this concept as I can't find any other way to explain it better than I already did.
That said, I am in touch with someone from Shuffle for a matter. I'll get them to look into it to see if the provider already greenlighted the transaction and that good-to-go message accidentally slipped and drowned by other messages. But I believe that's the extent of what I and my contact at Shuffle can do.