When you test the discount code using an incognito window you still need to enter a valid email address in the checkout.  Without a valid email address, the discount code will show that it is applied, but once you give it an email address that isn't ...

I'm not using any email anywhere in the checkout.  I'm not going to explain it again, because I think the problem is pretty clear.  I'm already chatting with support.

I can use my discount code with an incognito browser even with it setup to allow only a specific customer segment.  This scenario should deny the discount code.

Were you ever able to get this working?  I'm having the same problem.  The specific segment "email subscribers" does nothing to restrict people from using a coupon code.  Also tested using incognito chrome.

Did you ever figure this out?  I would like my contact form in zipify pages too, but I'm having the same problem.

Adding the cover image seems to only add it to the list of files in Shopify.  I would like to change the video's cover image where the video is embedded on a site page.