Sintel Forms not available in the ribbon menu
You have installed the Sintel Forms App in a site and the lists within that site do not have an option for “Sintel Forms” in the ribbon.
- Remove the app from the site contents by hovering over the ellipsis icon and choosing “Remove” from the options that appear.
- Navigate to the ‘Recycle bin’ and remove the app from there as well.
- Once the app is removed you can add it again following the Adding The App To A Site article and the and the “Sintel Forms” menu options should appear in the ribbon.