I have done a quick install of the Trex theme and everything works except the off canvas menu on mobile does not work. Can you provide details on how to enable
Please download this package and update to root. https://www.dropbox.com/s/0j3pfokfko4q7k1/trex_fix_off_canvas.zip?dl=0
The issue will has been resolved.
I had same issue and now i updated your mentioned package. It fixed for iPads but still not properly adjusting for iPhones.
Your support on this highly appreciated.
Thank you in advance.