Below is a concise and easy instruction on how to purchase Harmony from Angola on the Changelly site:
Please be aware that this may take from a few minutes up to a couple of hours for Harmony to arrive into your crypto wallet. We undertake to transfer your ONE 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 attack.
That's all! Your ONE will be transferred to your wallet asap.