I'm surprised that a user who has had an exchange since 2013 hasn't had an account on Bitcointalk so far? Also I am surprised that this user did not mention the name of this exchange and did not respond to comments. Maybe it's fake?
It's no use to speculate anything, maybe it's fake, maybe it's not, who knows?
Back on topic. OP, you can advertise your site on Etherscan or other popular platforms, such as Coingecko. The exposure is great here, but you also need a lot of money. I think social media promotion is useless unless you can hire someone influential. Stop using social media bounty hunters, they won't bring traffic to your project because they're also promoting 100 others.
But still, are you sure your exchange is not losing the competition because of lack of features, bad customer support, slow trading speed and etc? There is no need for promotion if your exchange is bad, it will be a waste of money.