Hi there!
I have few solutions for your problem!
Solution 1 - Change the theme:
Change the current theme with Twenty Sixteen, or Twenty Eleven and see if your problem is solved. If changing the theme solves the problem then you know that the issues comes from the theme.
Solution 2 - Disable plugins one-by-one:
As I said i the title, disable the plugins one-by-one and then refresh the site. You can do this with your theme but if doesn’t work do this with a default theme (like: Twenty Sixteen, or Twenty Eleven);
Solution 3 - Is this a premium theme?
As I see you are using the “ePix Responsive Wordpress Theme”. If you are the buyer of the theme, then you have the rights to ask for support. Address this problem on their comments section.
Hope one of my solutions solves your problem.
- Regards!