Hello. My name is ***** ***** I will be assisting you today.
it looks like the app is corrupted.
you can remove the app from your tv by following the steps i will post next
after removal you can download and install it ITV player from the following download app link at the bottom.
App can be downloaded from this link
How to delete apps from Samsung television (2013 models)
Click here to delete app steps
feel free to ask if you have any question.