Can you post a screen shot?
What version number and build of Premiere Pro 2018?
What operating system?
Hi Elio B,
Sorry for the trouble. It seems like an incomplete installation or an issue with corrupted preferences.
Have you tried resetting the Preferences? Steps: FAQ: How to reset (trash) preferences in Premiere Pro?
Try signing out & signing into Creative Cloud: FAQ: How to reset (trash) preferences in Premiere Pro?
Let us know the status of the issue.