Since you did not say anything about WIFI, I assume it is working fine. If that is the case, I would try different good quality Ethernet cables. Check for damaged or bent pins in the connectors. Also just because a cable is new, do not assume it is good.

@ArcherC8 

 

Sorry I have not been on the forum for a few days. I swapped out the cables, reset the modem and router. Switched the cables between the ethernet ports on the router. I will have a wired connection for a few minutes, than boom everything drops again.

 

At this point I am seriously going to take this router back for a refund.

Be sure you are using the power adapter that came with the router as an under powered one may cause issues. Also disconnect any USB devices to see if that changes things as sometimes they pull to much power. If you have good stable power, then I would consider replacing it.

@MRBLACKMAGIC5 

This WAN disconnect issue at the router seems to be impacting many TP-Link routers.  Appears to have been fixed with a firmware update.  See the following forum (it has a subect header of AX20, but ignore that and see how many routers are listed in the forum with beta firmware links for the fix)... https://community.tp-link.com/us/home/forum/topic/522208

 

I struggled with multiple troubleshooting steps like you until I came upon the above forum.  I have not suffered any more disconnects since uploading the beta firmware. 

 

Hope it works out for you.