If you are not certain about your issue, it is always best to ask the community on our bug forum thread No other cart has the features, customization, and ease of use that Shift4Shop gives. Customizability is my beloved detail with regards to the cart. We have liked using it https://bookmarkingquest.com/story18540544/the-fact-about-glb-viewer-for-opencart-that-no-one-is-suggesting