@ClemDaddy From elsewhere in this thread I believe the nature of the fix in the px50 is to allow you to use an advanced setting to assign a fixed WAN port and that will stop the autosensing. Did you...

@TP-Link Just wondering. If the X50 model now has this problem fixed by allowing WAN port assignment, can I get a single X50 unit and replace my current main S4 Deco only. Will the X50 interoperatate...

Not having LAN because no external internet WAN, is insane. How could i have known this prior to purchase