Configure Firewall for openvpn client with backup channel

[goga]

Good afternoon there is opnsense, it establishes a tunnel to the Openvpn server.
I set up a backup channel according to this instruction
https://www.thomas-krenn.com/de/wiki/OPNsense_Multi_WAN
I noticed that when I added the LAN rules - Gateway - WANGWGROUP
  my route goes through the backup channel, and when the backup channel does not work, the tunnels also do not rise.
When you turn off the backup channel in the interfaces everything works right away
How to configure Firewall correctly you are my case.

[goga]

tell me how

[errored out]

Can you give a network diagram? 

Also what is a backup channel; do you mean you configured an openvpn client tunnel to an external openvpn Server?

Also what do you mean by tunnels do not rise?