In the browser I hid the access to the right mouse button and now I don’t know how to go back. I can’t find the option in Blocs 3. Can someone help me? Thank you.
It was likely to be a piece of code added to your site or to the pages. Start by checking the code editor window to see if some code has been added in one of the regions. If you see the code, just delete it. If you added code on a page by page basis, you should see the code snippet on your pages where it was added - again, just delete it.