I am afraid that without any further information we can only guess. I noticed that you also submitted a support ticket, and I want to ask you to please use it to attach your project so we can investigate the issue on our side.
Also, if the issue is appearing only on Android devices and only when the application is build for release (LiveSync disabled), then the cause might be a missing Internet
permission. If this is indeed the case, please go ahead and open the project properties, navigate to Android
and make sure that in the Permissions