Connected devices not showing

[Alison7963]

Why is it that some devices show as being connected and others don't.  For example my sons PC is used daily, but is showing as not being connected since 10/5. 

[JimM1]

@Alison7963 What are you checking the status with?

[Alison7963]

On the sky app

[JimM1]

@Alison7963 Do not use it, no need to maybe someone else reading can advise.