Coinbase has made a release on the recent challenges they experience on their platform as a result of over traffic, which means they are receiving a lot of users clogging up their network of recent, could this be that the ban on the use of p2p in Nigeria erupted the decision to many of them in deciding to make use of Coinbase for their trading or something else happened behind the sudden network congestion received by Coinbase.
Coinbase has the ability to track users IPs to know if the real cause of their traffic is Nigerians crypto enthusiast who are clinging to the exchange to carry out P2P since the NGN/USDT pair has been removed from Binance P2P. I think they have not been able to actually get the direct source for the traffic. With their ability to track users IPs, they can tell which region is generating more traffic than the other, unless they don't want to mention Nigeria, if they really are the cause.