Last month, the Nigeria Customs Service confirmed a stampede at its rice selling point in Yaba, Lagos, which led to fatalities and injuries.

"They should just say they don't want anyone to access the loan," says Vanessa Macaulay, a third-year Mass Communication student at the Yaba College of Technology in Lagos.

"The changes to the ministerial regulation is to address social problems in a definitive and effective way and to curb the spread of yaba pills," said Health Minister Anutin Charnvirakul.

Yaba, another Kenyan musician, said the app's streaming service allows him to make more money and to connect directly to his audience.

Her mouth went dry as she tried to summon more words, anything to make the Yaba warriors listen, but it was too late.