Do you mean you want to put Google Adsense code to Youzify Environment on your website? If yes, you can create a new Custom Widget on Youzify Panel >> Widgets Settings. And then add the Adsense code there.
On the Youzify Panel >> Profile Settings >> Profile Structure. You can order where you can add the Custom Widget. On Siderbar or Main Widget (Overview tab).
Unfortunately I remembered well. What happens is that it was probably created as a test, now I see it in the profile widgets but in reality it no longer exists in the custom widgets 🙁 and this is not a good thing at all.