I don't know what a CORS policy is. If your SSL cert is blocking content on your own website, that is an issue with the cert.
One thing I can see your code above is your loading your site without a www: https://ediliziasmart.it/
While the files are called a www. The urls must be exactly the same for an ssl cert. I would highly recommend forcing a www. redirect on your site so that all urls use a www. It is a good practice to have whether you have ssl or not. Your hosting provider can assist with that.