do you see the K5 wifi on your phone? If yes, are you able to connect to it?
If yes again, did you try to switch the phone into airplane mode before opening the app?
Can you provide more information?
What have you already tried? What model/brand of phone are you trying to connect to? And what else can you provide as information?
The more information you can provide, the better we can provide an answer. Otherwise it remains for us to guess what the cause of the problem could be.