You can register with all most a reputable crypto platforms that'll provide you with wallet. Even the luno that mentioned has find solutions to cbn ban. My advise for you is to forget about the ban if you really want to trade crypto.Lately have been concern about the doings of central bank of Nigeria in banking financial institution in having anything to do with Crypto currency. It got me think: is there a wallet something like Luno that is accepted or recognised world wild. Something that is acceptable globally and one can register with your country's ID