RAX45 cannot enable FTP over internet

https://kb.netgear.com/24069/How-do-I-set-up-FTP-access-on-my-Nighthawk-router?_ga=2.206926227.1234998254.1639683250-1234918429.1639683250

https://kb.netgear.com/23845/How-do-I-set-up-my-personal-FTP-server-on-my-Nighthawk-router?_ga=2.253022857.1234998254.1639683250-1234918429.1639683250

https://kb.netgear.com/23942/How-do-I-set-up-FTP-access-through-the-Internet-so-I-can-access-the-USB-drive-attached-to-my-Nighthawk-router?_ga=2.253022857.1234998254.1639683250-1234918429.1639683250

Netgear has set up a community forum specifically for the NightHawk RAX WiFi 6 Router products. Most of the people who watch that forum are more likely to have experience with NH router products and know how to work it better than those of us who follow this router forum. Might be more likely to find someone who has a solution if the question is posted there:
https://community.netgear.com/t5/Nighthawk-Routers-with-WiFi-6-AX/bd-p/en-home-routers-nighthawk-wifi-ax6

Please use this link to the main forum product list to review and choose where to make your posts. 
https://community.netgear.com/t5/NETGEAR-Forum/ct-p/en-netgear

Thank you.