Below is a concise and easy instruction on how to purchase Cardano from Argentina on the Changelly site:
Please take into account that it may take from a few minutes up to a couple of hours for Cardano to arrive into your crypto wallet. We undertake to transfer your ADA as fast as possible, however, occasionally there might be delays caused by the below reasons:
- Overload of the blockchain;
- Updates of cryptocurrency;
- DDoS attacks.
That's it! Your ADA will be transferred to your wallet asap.