filezilla remote access via no-ip.com

Hi all

i have downloaded and set up filezilla server, i can access it via localhost in my browser (127.0.0.1). i want to allow friends to access my server via the internet, so i have set up an account with no-ip.com, the No-Ip url provided takes me to my router login. i have forwarded ports 21 on my router but still the url takes me to my router login. I have allowed FTP port 21 in ACL on my routers firewall, i have also disabled the router firewall and my comodo firewall just to test but still the url only takes me to the ISP router login.

can anybody tell me if i'm missing something or if there's an easier way to allow outside access to my server?

Thanks