Fill out all of the fields:
Input the key & secret that has been provided to you.
The from and to fields are *country code or **currency code
Example Code: US or USD
* Country codes are at the 2 letters format ISO 3166-1 alpha-2 code
** Currency codes are at the 3 letters format ISO 4217
Make sure you write the countries/currencies code in capital letters

For additional help, please see the API Documentation