The last couple of weeks I'm having problems getting Tivimate and Sparkle TV to run properly. After I turn the buzz box 6 on for the first time that day, the channel that the tv program was left on from the day before, it works fine. When I change the channel the system won't work at all and ends up showing a response code of 456, on both Tivimate and the Sparkle tv systems. If I unplug the box and plug it back in the system works until I change the channel and it shows the response code 456 and will no further response. I have reloaded Tivimate just to be sure the problem was not with it. Same results as before. All the other programs that I have installed on the Buzz box6 work fine???????

I have tested the Tivimate and Sparkle systems on my Nvidea and it works just fine. So Iam assuming that problem must be with the Buzz box 6. Can you shed any light on this pro

why not use Buzz6 or Buzz5 app in P6?

First of all, your assumption that it is the buzz box problem is far from conclusive.  You missed one VERY critical fact.  The Nvidia shield is NOT running Android 13.  Last I checked, it was still running Android 11.  This is not a negligible difference.  And since not many media boxes are running Android 13, it is quite likely that the software in question has never been tested on Android 13.

Tivimate is  3rd party software and this is a Buzz forum, so not sure you'll get much help.  This sounds more like a Tivimate issue or Server issue.

You are obviously not the first person to get this issue:

https://www.reddit.com/r/TiviMate/comments/xrl2te/error_456/?rdt=47033

Buying a Buzz box, and then using a 3rd party app for IPTV is kind of a waste.  As Ryu said, try using BuzzTV 6 or BuzzTV 5.