I would suggest removing the below from the official webpage or at least place it further down the page. It discourages new sign ups when they see they missed out on $500.

Remove --- >  The 500$ sign up bonus program has finished already.

I would also suggest sending a mass email letting everyone know the $500 for new sign ups has ended. I seen a few still advertising it which isn't good for a number of reasons.

Two that come to mind ....

1. It will piss new sign ups off and discourage them from using your exchange when they find out they signed up under false pretenses.

2. You will likely get an influx of emails inquiring to as why xxxx account didn't get the $500 bonus.

Steemit Post I made for UPCoin -- https://steemit.com/crypto-news/@rentmoney/upcoin-new-exchange-low-fees-beta-testers-wanted