Look at it this way in simplistic terms.
Network = transmitter you are pointing at
Muxes = the containers that your channels are wrapped up in
Services = the actual name of the channels. You need to Map Services for them to be seen in TVH. The layout of the TVH UI is like an Excel spreadsheet.
As a test click on the Network tab and select the the first line which is the transmitter you found. Select the Delete option and delete it.
Now you can run the Configuration Wizard again and just follow the on screen instructions. By the time you get the end of the of the Configuration Wizard all your channels will once again be visible by TVH.
Unfortunately in your case when you have to manually change a particular mux the Configuration Wizard will be of no use to you here. All I can advise you here once again is to step through the TVH documentation step by step until you are comfortable with manually configuring your system.
Clearly as your local transmitter is not an option for me to tune to I can’t confirm what muxes are DVBT or DVBT2. Maybe some other user here could confirm that for you.
I did suggest earlier installing another DVB application called Kaffeine. It may be more user friendly for you and I believe the scan facility is equal if not slightly better than TVH. If you did fancy trying it all you need do is
sudo apt install kaffeine
To delete it afterwards
sudo apt remove kaffeine
I think you’re going to need to do a little more learning about TVH in order to get the full value from it. Now that you have Ubuntu installed and your DVB tuner is recognised by TVH, maybe start a new thread with any further questions you have as you make your way through TVH.
