Fail2Ban works but iptables not banning

Hello,

I have a problem: I currently have vaultwarden installed on a docker and I have fail2ban hard-coded on my machine (Debian 12). I have configured fail2ban and it detects the IP and adds it to the “f2b-vaultwarden” string. However, the IP is not banned and the user still has access to the login page. How can I fix this, please? Here’s my IPTABLES