shipping is being charged, even with a free shipping coupon!

Hello Squarespacers!

Lately we've been getting e-mails from customers telling us that our website is charging them shipping, and we've been noticing this happens with orders that are 10lbs+ -- we offer free shipping on all USPS orders over $40, but the website still wants to charge shipping no matter what on larger weight orders. Has anyone been experiencing this lately? 

We've been running our website on squarespace since 2013 and have not had this issue before... ever! We also contacted squarsapce but they gave us a very vague email saying they wouldn't know when a fix would even happen. Here is a screenshot of an order I did today... if you do the math the total should be $161.80 NOT $173.70 -- what is going on here?! 

28 minutes ago, adanz said:

Here is a screenshot of an order I did today... if you do the math the total should be $161.80 NOT $173.70 -- what is going on here?! 

It's late in the evening here, but the math looks ok to me. 🤔

Products        $193.00
10% off       - $ 19.30
Free delivery  ($11.90 - $11.90 = $0)
Total  =        $173.70

$193 - $31.20 = $161.80 not $173.70 --- it definitely has the discounts calculated correctly but it is not giving the free shipping anymore.

Here is another example, we are noticing it is happening with orders that are 10lbs + ...