Problem with our talktalk youview box

What was your last question?

See
Youview Public Knowledge Home

Recommend internet speed is minimum of 3mega bits per sec.
See the Connection Guide ' YouView Support video at 0.25 / 3:12

the infrared sensor might just be kaput

0059,0052,0050, 0055. Try these codes. If you wish to get more details; check the sites linked here. It has set-up code list & set-up procedure to many popular brand remote controls. Common set-up codes to check with TVs and other devices are given, in the order of the "device's brand name list" in alphabetical order. Pull up older posts. Surf the site with patience. Surf the sites by type in the brand name to your set, in its search box.
http://electronicshelponline.blogspot.com/
http://remotesearch.blogspot.com/
http://electro-medical.blogspot.com/
http://electrohelponline.blogspot.com/

you'll find yours online at
talktalk.co.uk/myaccount
Login to your account.

You can find manuals here:
YouView User Guides TalkTalk Help

Have a look at the troubleshooting pages. Something is said about having to accept the legal terms, if forgotten you will not be able to use On Demand and Search features.

I think you should check your broadband speed. It sounds as if something has caused a reduction in speed, if it is too low you wont have access to many of the services. Log on to the TalkTalk forum and see what the minimum speed should be.

Full details are here, you can pay for extra channels too.
Also youview details are here too YouView over 70 channels plus iPlayer ITV Player
On Demand TV Unlimited Broadband Phone Line Package TalkTalk

Are you sure you tried everything suggested there Youview Public Knowledge Home ?