Below is a concise and easy instruction on how to purchase EOS from Nigeria on the Changelly site:
Please be aware that this may take from a few minutes up to a couple of hours for EOS to arrive into your crypto wallet. We undertake to transfer your EOS as prompt as possible, but from time to time there are delays because of the following reasons:
- Overload of the blockchain;
- Updates of cryptocurrency;
- DDoS attacks.
Voila! Your EOS will be transferred to your wallet asap.