For help with your TalkTalk TV box, channels and apps.
yesterday
Universal remote won't change channels
yesterday
Which box do you have?
If I'm reading this right you are using a replacement universal remote.
Unfortunately TalkTalk can't support non TalkTalk equipment used on their boxes.
If it's a universal code you require, I suggest you try Google to see if you can find one.
Or is it a universal remote you have with a smart TV? If so you may need to install the box to the TV. I had to do this with my LG TV.
Or purchase a genuine remote for the box from eBay.