Sophos SG135 WAN side firewall configuration new problem creating a Vlan interface

I have a few subnets and have been trying to bring some discipline to my firewall configuration. Because the system is live I am trying to create a new interface Test_Network on a VALN using my private...
install fail2ban on utm9

i saw a thread thats 8 years old, so someone did it, but i guess till now, thats kinda outdated. anyone here who installed it in that "last year" ? thanks