2 problems:

1) No Popup. It just opens the image on a new page.
2) The arrows in the Gallery don't work. When you click the arrow, it doesn't go to the next page. (It only works if I enable "Include jQuery", but I don't want to do that).

I am using the Joomla 3.6, PHP 7, and Ubuntu 16.04

Can you please tell me how to get this working?

Dear tazzarkin

Please check our answer in your ticket

Thanks