Kulob

Hi, i really love this game, enjoying it with my friend. but here's an issue that doesn't let enjoy the game fully. I tap the "mobilise army" button, it opens a window but the window is blank, it doesn't show anything, when randomly tap on the blank space, it responds. Whenever i tap army control, same problem happens. help pleaseeeee Im using latest version, 1.92 on my Galaxy S5 mini