GEOIP rules not working?

Hi,

Thank you for the plugin.

I have choose the GEOIP rules to apply USD currency when the visitor is in Singapore.

Screenshot – https://tinyurl.com/2akar9ea

I am based in Singapore but when I go to the store, I still see it in AUD.

Store url – https://sonaturalcompany.com/product-category/deodorant/

May I know am I missing something?

The page I need help with: [log in to see the link]