I saw that their twitter is active and it's great you got paid for the bounty. I also hope to get paid soon as I did the VIP sig campaign there and they look to be serious and honest. They raised just voe rthe soft cap which is still good, especially as many projects die in the wind and don't see the time of day. Here is their latest post on twitter which shows and marks their latest progress.: https://twitter.com/AgateChain/status/1057577134053457921 They do seem to be racking up some partnerships, which to me bodes well and is a good sign for things to come. It will be interesting to see what exchanges it will go on and how much utility it will bring. It might be one of those hidden gems.
Same here, I was in their VIP signature campaign as well, I honestly thought that their bounty campaign had long been gone along with my rewards; but, to my surprise, BM messaged me yesterday asking for my ETH address.
You might want to get in touch with the bounty manager, maybe he just hasn't pm'ed you yet. I've also already read that tweet and I agree with you, it certainly is a good sign.
What confuses me is on the medium post, it says they are officially accepted and can legally operate as a cryptocurrency exchange and can accept and exchange fiat, digital assets and any other cryptocurrency?
Does this mean they'll build their own crypto-exchange and have AGATE listed on it?
To be sincere, the BM was an honest man cause have already forgotten the rewards and if it someone else he might keep all the token to him self.
When do AGATE token will get to any exchange? 
Good question which I will like to know the team response cause I checked their telegram account no much update on there.