Hopefully, you’ve already figured this one out and are now successfully using your iubenda cookie solution on your Wix site. If not, or if others have the same problem, I would like to share the solution I finally stumbled upon. I had been having the exact same issue and finally figured it out!
You need to enter the iubenda Cookie Solution banner code like a custom analytics tracking code. It is so simple and there is no complicated workaround required! Just follow this link to the Wix Help page on entering a custom tracking tool and make sure you select ‘Head’, just like in the iubenda instructions.
Hope that helps!