How Do I Use Another Physical Keyboard on ZALO (Vietnamese Keyboard)

[Deni Yulianti]

I have a problem in using keyboard on Zalo (Instant Messaging Application). whenever, I try to type some word on Zalo using another keyboard, i.e. Vietnamese keyboard, then the kyboard shows blinking all the time. I use Remix OS Marshmallow as an Android Emulator over VMware player, the VMware player runs on Windows 7 OS.

Please help me out. I would appreciate for any suggestion. Thanks.