@DerekTsui if you use no-ip it should work. go to no-ip administration console. create a DDNS Key, register the desired domain in the group, when done go to the router, log in with username and...

@teowk1 I get this speed, but remember you don't always get higher speeds with 160Mhz bandwidth, 160Mhz takes up half the band and the risk of noise from neighbors is high

@TW_EPC see if there is any of these firmwares you can use https://community.tp-link.com/en/business/forum/topic/853890?moduleId=3

@WinnieGreg Remember you can only adopt one router in one site, if you are going to adopt multiple routers you have to adopt this one in another site. So it is not very practical to do it that way if...

@DerekTsui you can only have one DDNS for each wan interface.

@jra11500 I did a test here and, the same thing happened to me. strange