Customizer Trouble

Hello everyone,
I am facing this issue from past 1 week. I am unable to customize my website. Everytime I press the customize option there is just a blank screen with just a widget option. I have tried deactivating all my plugins but that didn’t work either. I am using the theme Ocean WP and when I change the theme the customize option works fine but I don’t wish to change the theme. Can someone please help me.

Note: I am not a coder and I don’t have any experience in coding so if you can please explain me in layman terms that would be great

• This topic was modified 7 years, 8 months ago by Steven Stern (sterndata). Reason: MOved from developing to fixing

The page I need help with: [log in to see the link]