Satowallet is a failed Nigerian exchange which was launched ib 2017. The exchange is a Nigerian owned company based in Dubai. The exchange didn't last long at all before it eventually closed down and became inaccessible. In 2019, there was a report by the company that there was a major hack on their funds worth over $1 million dollars. While others say that this exchange performed an exit-scam others are if the opinion that the hack was real. However, trading here is basically impossible. I tried to access the exchange but it showed that the domain had expired and was no longer accessible.
Trading in this exchange has been suspended or might have been halted, there hasn't been update about this exchange since its closure. In your best interest, it's better to stay off from this exchange.