Yesterday:

I installed an Archer BE550 router replacing a nighthawk.

My wife's office wasn't getting great signal (exact opposite side of the house) so I ordered a RE1500x to do the Easy Mesh thing. (I know, I could have gotten the WiFi 7 to extend the 6ghz too, but money is tight)

Today: 

Installed the RE1500X and my wife's office is better BUT...

My Android phone is now getting IP Configuration Failure *on the extender* but if I am closer to the router (for 2.4/5) or connecting to the 6ghz network, it's fine.

There are 5 devices connected to the extender acc'd to Tether

So, obviously, it's something about the extender and my Android not making for a good connection.

I am not seeing anything on a search of the forums, so, any help would be appreciated.

NOTE: I am guessing on the Model? Walmart lists it as 'AX1500' and 'RE1500X', but it looks like it matches 'RE515X' on TP-Link's product list, which isn't an option on the list above.