Why can't I configure FTP for DDNS access on Zyxel Keenetic II?

Question

Domain Name System

I do according to the official manu .
I got domains for Free DNS in the no-ip.biz and no-ip.org zones, but I can't connect to them.
Then I tried on the external ip, it also fails to connect.
The firewall configured so

Actually, in a local area network on 192.168.1.1 FTP regularly works.
Internet connection via ISP. The latest firmware.
Actually, please advise how to configure access to FTP from the outside?

Answer 1

Are you sure your ISP isn't blocking?
St. Petersburg matrix opens 21 22 25 80 and something else on demand, and in my opinion for some money

Answer 2

In network address translation, you need to forward to port 21.
This is how I have it configured to access the router and transmission