Can I create a new admin in Bash? For TVheadend?
My LE/TVH setup gives me full access by default too. A few ideas....
Try adding the version number to the TVH service name.
systemctl status service.tvheadend43.service
You should get something like this:
/storage/.kodi/addons/service.tvheadend43/bin/tvheadend -B -C -u root -g video -c /storage/.kodi/userdata/addon_data/service.tvheadend43
What command line was TVH started with?
You can also double-check your service name using:
systemctl list-units|grep tvh
If you want to go thermonuclear, you can start TVH without any access control at all, do what you need to do, and then put things back the way they were.
systemctl stop service.tvheadend43.service
Run TVH manually without access control (Not recommended for day-to-day use).
/storage/.kodi/addons/service.tvheadend43/bin/tvheadend --noacl -B -C -u root -g video -c /storage/.kodi/userdata/addon_data/service.tvheadend43
Do what you need to do.
CTRL-C to stop your manual TVH.
Restart TVH.
systemctl start service.tvheadend43.service
You can also stop/start the Kodi TVH service from the Kodi addons menu.