To change the language displayed on your Airtm account or the local currency, after logging in, go to Settings - Profile. Tha change will take a few seconds to be saved automatically.
Currency: Search and select your preferred currency. You can use the ISO code to locate it more easily (ARS, VES, COP, INR, etc).
Language: Select your preferred language from the drop-down list. Currently we only have English and Spanish. More options will be added soon.