I have used this app a lot in the past, mainly as a remote keyboard and mouse. Recently I got a new phone (OnePlus 3), and discovered a complete inability to access the menu on gmote, this means I can't get to the keyboard and mouse bit, and I can't switch server easily. The phone doesn't have a hardware menu button, and there is no three dots software menu button on screen as there is with my Fire tablet. My guess would be there is a list of devices which need a menu button and this phone isn't on it.
I'm assuming that I'm not just being dim because my old phone (hardware menu button) and tablet (three dots menu button) both work without me doing anything, but if I have missed a setting, or if there is something I need to do differently please let me know.
Thanks
Tom