Opnsense access from WAN system (Daisy chained router)

I have an OPNsense box connected to another firewall on its WAN port (Daisy chained). I want to access from another system that is connected to that higher up firewall.

When I run this command in the Opnsense console:

echo “pass in quick on ix1 proto tcp from 192.168.10.101 to (ix1) port 443 keep state” | pfctl -f -

I can access the webui.

I then add the rule for the WAN interface to allow in the traffic that matches that rule, click save, then apply, then I get nothing but a small hang and white web page. PLUS, I then have to redo the console command to even access the webui again.

How can I acheive what im trying to do?