Working on Ipad, not working on HTC One / Iphone 6

Hello!! First, thank you for taking the time to develop this plugin, much appreciated.

I’ve installed and activated the plugin. I notice my drop-down sub menus work on my Ipad but not my Iphone or HTC One.

Can I edit the code to force the drop downs to work? Not too savvy with this stuff but any help would be appreciated.

https://www.ads-software.com/plugins/black-studio-touch-dropdown-menu/