Hi Riley!
Thanks for this response. I changed the www domain to our default option. Although that didn’t fix the issue, I figured it was just good practice any ways. Here is a more thorough video of what is happening with the bug. Hopefully it helps.
When you first click on the link in the Instagram App, it opens the webpage within Instagram. Notice how it seems that the Cart function isn’t loading properly/completely: The “In My Cart” circle in the upper right section isn’t displaying a number, when it should be displaying a “0” (or however many items are in the cart). Adding to cart creates an error.
When I go to Home Page, and go back to the product page, the cart then loads correctly with the number inside the “In My Cart” circle. Now Adding to cart works as normal.
Thanks!