Please do not SHOUT, as use of capitals is seen as poor on forums.
Thank you.
The solutions for YVM4503 is the same as YVM503, so can you please try the steps outlined here.
https://support.youview.com/youview-box/error-messages/fix-for-yvm503/
If this does not work, could you please try a factory reset. This can be found under settings. If this works you will need to sign back into the apps.
Please let us know how you get on.
Please remember to mark Solved Posts with Best Answer. Doing so helps other customers and saves TalkTalk's Support Team time by only looking at unsolved topics. Thanks, Steve (a fellow customer).
