Tvheadend

Hi.

my setup:
Synology DS 418play
Docker 18.09.0-0519
SAT-IP Server Octopus Net (4xDVB-S)

I successfully installed docker on my synology. Then I created a tvheadend container with the following commands:

sudo docker container run -d --restart always \
--name tvheadend \
-e PUID=1026 \
-e PGID=100 \
-e TZ=Europe/Berlin \
--net=host \
-v /volume1/docker/tvheadend/Aufnahmen:/recordings \
-v /volume1/docker/tvheadend/config:/config \
-v /volume1/docker/tvheadend/picons:/picons \
-v /etc/localtime:/etc/localtime:ro \
linuxserver/tvheadend:release-4.2

The problem:
I start the wizard of tvh, create a new admin and standard account and start the channel scan. This does work without problems. After the channel scan is finished I get the message, that the default admin account of tvh gets deleted and I have to login with an account I created some minutes ago. BUT this does not work! I am stuck at the login window and none of my accounts are able to login.
I dont know what to do now.
I also tried with tvh 4.3, but there is the same problem.