Thanks for posting in the forums! I'm sorry to hear you are experiencing this issue again. I understand it worked temporarily, after you uninstalled/reinstalled the SlingPlayer application.
If you go to settings in the application, at the very bottom of that list it will show your SlingPlayer version. Could you tell me what that says, just to verify you have the latest version of the application?
You can refer to the links below to verify you have the latest SlingPlayer version on your mobile device:
SlingPlayer for Android Phones:
SlingPlayer for Android Tablets:
Hope this helps!
The Sling Moderation Team