It seems that you are having some issues with the SlingPlayer for iPad application ever since you updated the iPad OS version.
The fact that the application keeps working fine on your iPhone means that the issue is related to the iPad OS upgrade.
In all case, we recommend you to uninstall and reinstall the SlingPlayer for iPad application and run the AV configuration one more time. If you do not know how to uninstall this application, just check this link:
Let us know how it works for you.