We are ready to help you and willing to do so very much.
Could you please specify your step-by-step actions, what exactly you do and where, so we can reproduce your actions and see where exactly the problem occurs.
Would you be so kind to provide us with more detailed information:
1) Which device exactly you are using (specify the device type and model)?
2) Specify the name of your application.
3) Please specify connection settings.
4) What has happened before the problems occurred?
You see, the more details you provide, the easier it will be for us to suggest a solution.