You have big bug in remote access for Archer vr1600v vr600 etc 403 forbidden or broken login
Also refer to
https://community.tp-link.com/en/home/forum/topic/219760
Problem:
When remote access enabled,
test the remote access from within my home network, with the WAN IP insead of LAN IP typed intot he browser:
with the given wan ip+port displayed in the web gui, the result is 403 forbidden.
Try to use wan ip + 80/443 port, it works.
test the remote access from outside my home network, means a real remote site:
with the wan ip+port displayed in the web gui, the result is a broken login interface, none of the button do anything:
Try to use wan ip + 80/443 port, no response.