Here is a brief and understadable guide on how to obtain Optimism from Niue on the Changelly website:
Please take into account that it may take from a couple of minutes up to a few hours for Optimism to land in the wallet you have provided. We are doing our best to transfer your OP as fast as possible, however, occasionally there might be delays caused by the below reasons:
- Load on the blockchain;
- Cryptocurrency updates;
- DDoS attack.
That's all! Your OP will appear in your wallet promptly.