WooCommerce and square all connected, but at checkout, it says "square unable to process payment"

[YellowHutchFarm]

My WooCommerce/WordPress site and Square account are all synched up, but at checkout, customers are getting an error message. 

[Helen]

Hello @YellowHutchFarm, I suggest reaching out to WooCommerce Support directly so they can see what's causing this. If you've already contacted them and you're still having trouble please reply here to let know.