hello,
it happend to me tv too ! this is what i did
Streaming from the Ziggo GO app is useful if you have a second TV to which no cable has been pulled through. For example in the bedroom or in a holiday home in the Netherlands.
Connect to the same Wi-Fi network on your smartphone or tablet as on your Chromecast or Apple TV.
Take the remote control of your TV set and press the Source / AV / Input button (the name of this button differs depending on the type of remote control).
Open the Ziggo GO app on your smartphone or tablet and press the menu button at the top left of the app .
Press TV Watch and then select a channel.
Then press the Chromecast or AirPlay icon to stream the image to your TV.
The Chromecast icon can be found on the top right of the menu bar: Chromecast
The AirPlay icon is located at the bottom right of the menu bar: Airplay
regards
dirajmore
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