Welcome back to our Community, I am sorry to understand that you're having some issues with watching some of the apps currently.
Can you let us know what steps you are taking to open these apps? Do you find that you are having to log in each time you open the app (they should auto log you in once you have signed in once)
I have located your account to have a quick look at your box from this end; we can see its been around 3 days since you last rebooted your box and Hub and we can see that your set top box is currently connected to our broadband via Ethernet.
Do you have any issues with any other apps or viewing? Can you watch OnDemand or CatchUp ok? How's things when playing a recording?