When you first install the Android Application it will ask you to accept the security connection request warning.

In some versions of Android the OK button maybe grayed out, this is due to a bug in Android where by applications that use screen overlays can cause the OK button to be impossible to select.

Applications such as 

• Facebook Chat heads
• Applications that change the screen color depending on the time of the day

Close these applications, once closed you can select the OK button. You can now open the application that was causing the problem back up again as this security warning only shows once after initial installation