The only information I could find on that error is on the Facebook Dev page:
Pixel Did Not Load
This error means that the Pixel Helper found what looks to be Facebook pixel code on your site, but the actual HTTP call was never made.
This could typically due to an error in the code, but could also occur if the pixel fires on a dynamic event (e.g. on a button click).
In that case, the error will disappear upon clicking on the button.
But, the page doesn't really go into much more detail on it.. : / I'll have to do some more digging for you, but hopefully someone more familiar with this will chime in! 
So it seems this is a bit tricky and you are definitely not the only one to run into this issue. I found this thread that may shed a little more light. Mike posted a reply that (from what I can tell) should work.
https://community.weebly.com/t5/eCommerce/Facebook-Pixel-Integration-for-Store-Checkout/td-p/28204
I also added product to your cart in hopes that Facebook will update on your end to show activity on the cart page. We will be able to (fingers crossed) confirm this once I receive the Abandoned Cart email. Nice site, by the way. I flunked the coconut test, though. 
I'm so glad to hear this! You did have abandoned cart enabled, and I did receive my reminder email. 
If you click on Orders->Abandoned Cart you will see your stats. Because this feature is enabled, anytime someone gets to the checkout screen (they have to at least put their email in) and does not process the order the system will automatically send an email reminding them they left something in the cart. It's a pretty cool automated email because it comes with a link that will send the customer right back to the checkout page where they left off.
