Accept payments through iPaymu for your Digital Store powered Easy Digital Downloads, a payment gateway for Indonesia.
Once you've downloaded the plugin, head over to Ipaymu.com to sign up for an account and get your Api Key.
If you have an Api Key, you can copy and paste that on Downloads > Settings > Gateways, find "Ipaymu Gateway Settings", paste on API Key fields. Save it. You also can choose Indonesian currency, on General Tab.
Keep in mind, Ipaymu don't care about your currency yet. You should set up your price on Indonesian currency, because if you set up your price $50/item, Ipaymu going to process that as Rp50/item or IDR50/item.