Thanks a lot, changing permissions has all images visible now.
please find it below
This is not the plugin issue. I have also tried fresh installation with fresh import of Enfold 2017 Demo. The problem is somehow related to the theme or demo import. I get no errors while importing the demo. You have the login details for back-end and can see for yourself.
I was having the same issue. After endless searching I found the solution in Ultimate Member docs,
Enable/Disable Ultimate Member Menu Setting
To enable/disable the settings that appear in nav menus and apply custom access settings to nav items, please navigate to Admin > Ultimate Member > Settings > Advanced > “Disable Nav Menu Settings”.