Cannot see the Kodi toolbar – Settings – Video – Music etc

I want to get legal with my add-on’s and revert back to Kodi’s default screen.

I installed a add-on from which I know now is a banned add-on from Mr knowitall although I did not sign-up or use its services.

Now I cannot access the Kodi default toolbar ‘Settings – Video – Music’ etc, this add-on loads to its own screen/skin and I cannot uninstall it or see any options to do so.

Is there a method around this or is it case of uninstalling and reinstalling Kodi on my Firestick.

thanks