Syncthing discovery not working

Hi everyone, I installed the Syncthing app from Umbrel store to sync file and folder between my devices, but it doesn’t work.
The devices on my network are not communicating with the Syncthing container on Umbrel.
For security I disabled NAT traversal, maybe is because of this?
I think the discovery doesn’t work because it uses a private network of the container.
If I run the container manually using the flag--network=host it works just fine.
Umbrel developer are aware of this issue?
Should I enable NAT traversal? But I want my file to stay on my network.

Bye