Customisability is low, there is nothing you can do to make this theme unique to your business just change pictures.
Documentation: and if there was a means of customising the theme you would not know how cause the information given with the theme is poor a bunch of soundless low quality Youtube Videos.
Customer Support: Is so so very poor; not only is documentation almost non existent, which you contact them for some form of support they never get back to you.
It also appears the needed plugin for the theme (which you then have to figure out how to use) doesn't have a valid licence so you have to use some dodgy loophole to get the plugin working on your site.
This theme was a waste of my money...
None of these claims are true. Can you send us an email at email@example.com? Would like to help you get this resolved.