Ths STA teams made empty promises that they can't keep, that's why the price is sinking perpetually
They want to buy back the tokens cheap that is the reason to dont want the coin on another exchanges SMART
You can't say this as a reason, they are also worried about not having STA on many exchanges.There are some legal concerns stopping them from getting it listed on top exchanges and still it is a question mark when that will happen.Once that happens price can have a rise.