Hello, I’m magento developer.
I tried to install trex theme on our demo store. We have installed EE 1.14. Everything work perfect except menu for tablet/mobile. Menu even do not open.
It looks like html has one classes/ids names. But javascript has another classes/ids inside selectors. That because nothing happens. I tried to resolve this issue, but it looks like the problem needs much more time.
Could you please provide distributive of theme, which you installed on demo page?