I have created a port forwarding rule. I do not have public IP on my SIM but I configured DDNS service and now can see current public IP and can use hostname to connect.
My rule is simple request to port 1200 I forward to 162.168.1.12:1200. Rule is enabled. But I cannot access it. I looked and I see other rules in other tabs like traffic rules. May be I need to add something to General settings or Traffic rules tab? I am not very good and networking< I am sorry if it is obviouse question. Before I used TP-Link and it worked like this, just add port forward rule.