My name is***** will try my best to help you with your question today.
On what device or system are these apps disappearing from? (e.g. TV, tablet, smartphone, laptop)
Thanks for getting back to me, I was offline when you replied earlier. Sorry for the delay!
Depending on which Samsung TV model you have, not all apps may be available - the available apps are controlled by Samsung, and are updated over the air to your TV.
Ensure the TV is left on standby mode at night so that it receives regular updates and you will get all available apps for your TV.
Sorry for any delay, Shelagh.
We really need to know the model number of the TV before we can offer you any further assistance with this question.
I am a user of this site just like you. For any account queries please contact customer services.