Australian 'market' not converting from USD to AUD

[PearlBar]

Hello,

My Australian market in Shopify is not converting to AUD at checkout like every other market does convert to the local currency. I have contacted Shopify support and was given this information, but was advised to ask this forum for help on the specific coding steps. 

The Shopify template I use is Debut. 

Any help with this so that my AU customer can checkout using AUD currency would be greatly appreciated!