What's the issue between Binance and the Nigerian government?

Cryptocurrency platorms are very popular in Nigeria, so why have Nigerian authoraties clamped down on cryptocurrency firms? And what's going on between the firm Binance and the Nigerian government? Also Mauritians once enjoyed a healthy economy but the Mauritian rupee has taken a hit. Why is that and what's been the impact? And how the London based play 'For Black Boys Who Have Considered Suicide When The Hue Gets Too Heavy' is opening up conversations considered taboo, within black communities.