I've got Panasonic Viera E6 connected to a Fritz!Box over LAN cable.
I have the Panasonic TV Remote app installed on my Note 4. This is how it works (or rather, doesn't work):
- If the TV is on when I launch the app it goes through "Viera TV Discovery" process every time. It doesn't remember the last time it controlled this TV.
- Once it discovers the TV, it can control it, including turning it off.
- If the TV is off (even if it's just been turned off by the app itself) - it no longer sees it and can't turn it back on.
I don't believe it's an app problem - the app is rated 4 on Google Play, and no one seems to have this same issue as myself.
Settings wise:
"TV Remote app" - is "ON" on the TV side.
I've given the TV a permanent IPv4 address.
There is definitely network connectivity because all the apps on the TV work fine.
I also tried an alternative app (Panasonic remote by Spikesroid) - the symptoms are exactly the same.
Is this a limitation of this particular model? Or am I doing something wrong?

