Hello,
I have checked the store on your site and I see one product priced more than the amount you have in the Theme settings: https://gyazo.com/1904fe3d5c597cbab91d85f543ebb9b7
The progress bar works in this way: you set the amount as soon as a buyer reaches the amount in the cart, he gets the free shipment.
The progress bar shows the remaining sum to reach.
Please check your settings in the Theme Settings > Shop > Free shipping bar.
If you have any questions please feel free to contact us.
Best Regards