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Where are you based?

Fiji islands

Ok, clear. If you have an international texting plan with your mobile service provider, you can use one of the other countries nearest by. But I didn't test this and international SMS are usually more expensive.
For local functionality you'll have to be a bit more patient. They don't mention country names, but show the below in their blog

Our goal is to reach over five billion people in their native language by the end of 2018.