You can always check if widgets have been added by checking the thumbnail of thee album on your albums page.
https://jalbum.net/help/en/JAlbum/Website/Album#Edit_album
Hover over the thumbnail and select 'Edit' from the drop down menu that appears.
On the edit page you can see if widgets have been activated and if so add or disabled selective widgets.
Don't know why it didn't work first time, but it is working now.