We don’t recommend you use a QR code/ ZapCode as a trigger, as it is generally used to activate AR content , but it can be difficult to display content on a trigger. In addition, QR codes consist of repetitive patterns, which is a bad practice. For tracking image best practices, be sure to check our article here.
What you could possibly do is instead of placing your content on a tracking image, you could use world tracking. Be sure to check our Getting Started guide here on how to do that.
Hope this helps,