Hello good afternoon. My Toolbar below the Publish Button has disappeared, I do not know how to retrieve it. Can someone help me?

Hello Luís,

Have you upgraded your Service Studio?

The newest version has some changes related.
When you select an element/widget, you will see in the properties this:

If you move the toogle to the brush, you will see a more complete "style" box.

Hope this will help you.

Eduardo Jauch