Automatic Currency switching not working

Hello,
We are using multicurrency switcher on our website organicweavefactory.com but its not switching currencies automatically. It showing different currencies on different pages. Like on home page its showing usd, product page showing UROs etc. We tried both session and cookie feature and also added maxmind geo tagging.
We have to fix it in next 24 hours. Right now we just removed the switcher from all pages just kept on product page below add to cart button to avoid problems.
May be we remove your code for embarshment and start using realmag currency plugin. Its working perfect. Plz fix it asap or initate refund.

Also theme we using : Porto wordpress theme.