@Torrential Have you tried to edit/delete the old WAN connection ? The device may have a limit of only one WAN connection.

@Jammers If you have a mix of wireless client devices that support WPA3-Personal (newer standard) and the older standard WPA2-PSK[AES] you could try using the WPA3-Personal+WPA2-PSK[AES] setting. If...

@PxP For such functionality you'd need a business grade router like these. Home grade router devices doesn't have this capability.

@MomchilDamianov Here's where you can chanage the Primary DNS of AX23:

@yar143 If understand correctly you need to configure Archer C64 WDS feature - try this guide.

@Oldnight Lets hope TP-Link will come up with a solution soon as I just bumped on a thread with the same observations as yours.