Thanks for your post and welcome to the Community. It's nice seeing a new face in the crowd.
I'm sorry to hear that you have been having issues with your On Demand service.
Checking the account, the stats on your box are looking good. All signal levels and power levels are as they should be.
What error messages do you get when you're trying to access On Demand?
Do you get the same issues when using Catch Up TV?
Are you trying to access the same channel or programme?
Come back and let me know.
Tech fan? Have you read our Digital life blog yet? Check it out