How do I connect Google Analytics with my wix.com webpage?

So here’s the deal. I have my own domain name through www.namecheap.com.

I have an premium-package webpage through www.wix.com, with which I’m very happy.

I have simply forwarded my personal domain name to my WIX webpage.

I’ve set up my Google Analytics, put the tracking number in precisely where WIX tells me to put it…and I have tried EVERYTHING, but it’s just not working!! I visit the site at least once a day from various computers just to see how it’s running, so I know it should be picking those up. Advice?