Is it working already (14th July)? I think I properly connected with GA4, but it shows info that there was no data stream from the site (itchio) yet. Don't know it it's something with my setup or the feature haven't been fully implemented on itchio yet.
Viewing post in Google Analytics 4 Update Guide
I still struggle with setting it up propperly. I got my "data stream" created in GA4 for URL: https://szajnaworkshop.itch.io/. I have a G-XXXXXXXX code, which I paste into itchio settings "third-party analytics" tab. Is there anything more I should do? What am I missing?
Actually I think there is something wrong with itch's implementation. If you view source (I did it on your page) you can see only the old GA analytics loaded (analytics.js) but the new GA4 should be gtag.js.
So I do think this is a problem that itchio need to solve.
The reason I think it's working for me is that I found a new profile had been automatically created for me using the old script. So mine might stop working at any time.