Can not run Multitask in Tizen TV Web App - multitasking

I implemented the Multitask functionality in Config.xml and in my js.
I noted that Multitask functionality does not Work in my TV Web App program, because every time the App is opened, even after open another app, the Javascript code and the App is restarted.
My Multitask only Works when I enable the Background Support, but Samsung seller site says that only Apps Allowed by Samsung can use the background-support enable.
Resume: i AM unable to run Multitask in TV Web Apps, since Javascript is allwais restarted after open Web Apps.
Please Help.

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I could also debug the application by clicking the debug button in Android studio, and that will try to launch the application, however it will fail to start since it wont be served the firebase config file correctly (since this is firebase serve does for us).
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IBM Worklight : Flow of sample Push Notification project seems wrong on windows phone

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I have a requirement to install a desktop application written in visual c++ when our customers log in our asp.net web site. The desktop app will be installed once, but will be updated as a newer version is available. What is the best way to do this?
My second question is that is there a way for my asp.net web app to interact with a window service installed on customer computer and direct the window service to control USB devices.
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