In this post below, on post #10, the user say a problem with DHCP on ISP that cause a erro on pic a IP from ISP. https://community.tp-link.com/us/home/forum/topic/99170 I test here with other router...

Hi every one. I have the same problem. Router: ArcherC5400 v2.0 Firmware: 1.2.2 Build 20170912 rel.56240(5553) I'm from Brazil. I put the time manually, but the error don't stop. Here are a few...