I'm trying to add the "RT-V4 Native American" to my cart, but I'm receiving an "undefined" error message. I have been trying to add this to my cart for a few days and I've emptied my Firefox cache, refreshed the page and tried with Microsoft Edge to no avail.

I contacted the vendor, but Rena kindly directed me to post a message here.

Hoping for a speedy resolution while this product is on sale. :)