I dey watch Sabinus skits but I never once pay attention to the exchanges way them dey promote. The only Nigerian owned exchange way I fit recommend na Roqqu. Their p2p dey fast and their rates dey okay.
But there are many skit makers that are advertising exchanges which I have not heard about before.
I have been able to try out a new company like that where a newly content creator by name Joshua Bolu...is their ambassador, Assetar been the company claims to trade crypto and gift cards to Naira. I followed up their site but all the transactions was done manually on Whatsapp by the sales manager. As in, you'll be redirected from their site to the WhatsApp number for business.
Although, I don't find it safe dealing that way because most of the company are just owned by individuals operating from their rooms, no office while some are not registered.
I can not trade my crypto with anyone on Whatsapp, I will like to do it through the app. If the exchange does not have app or a site I will avoid it.