Safe Search, Block internet... not working

Hello

I re-installed a Firewalla Blue Plus in Experimental Simple Mode (Simple mode blocks all traffic on the router), and all features like Family protection, Internet block... do not work

Is it linked to the Experimental mode, and do I have to look at other parameters ?

My configuration is a Fritzbox 7490 (latest fw) in Mesh + Firewalla Blue Plus (fw 1.97.32, app 1.49.79 Android). IPV4 and IPV 6 enabled

Thanks for your guidance

Update : I solved the issue

1.  I was running Pihole for adblocking on a Pi. I enabled adblock on the Firewalla, and removed the DNS redirection to Pihole
2. I disabled IPv6 routing on the Fritbox. IPv6 still running on the LAN between devices, but not routed outside. I need to keep 'inside ipv6' for Ring devices (still looking for the tech reason?)