Ultimate Addons cannot activate

Hello there,

I have used Ultimate Addons plugin for visual bakery for my site. I have used flip boxes on home page.
Now i am getting 504 error when try to activate plugin.
When plugin was deactivated flip boxes not displayed. It shows only shortcodes.
Please suggest me another option use same flipboxes as Ultimate addons plugin.
You can see on above link that flip boxes cannot displayed in “Our core” section.

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