At some point there were restrictions of getting money out of the country; a big, well known American company with business in Nigeria bought a mix of cryptocur

At some point there were restrictions of getting money out of the country; a big, well known American company with business in Nigeria bought a mix of cryptocurrencies with local currency and sold it for dollars, getting around the restrictions. The transaction was in tens of millions of dollars, if I recall correctly. This kind of transactions make the local currency even weaker, so there is at least this reason the central bank wants to close the door.