@Ashley5090 That I can't help you with. I suggest you reply to the forum topic with beta firmware announcement https://community.tp-link.com/en/home/forum/topic/581552 and ask there why Smart DHCP...

@StA How about trying on Guest Network, set with no password and no Security (encryption)? Just to see if it is password/encryption, or something else.

@Ashley5090 Try with the Satellite Deco, and I don't think it has to be wired. If you have more than one, try with each of them, one by one. If you suceed upgrading firmware on Satellite Deco, you...

@Ashley5090 I just realized you have TP-Link router. Check if this document applicable for it: https://community.tp-link.com/en/business/stories/detail/1804 If router DHCP Server setting is Auto,...

@Ashley5090 This beta firmware for X55 allows to disable Smart DHCP feature you are referring to: https://community.tp-link.com/en/home/forum/topic/581552 "Added Smart DHCP on/off switch in Access...

Samazar wrote Is there any advantage to connecting the 2 slave modules via a 5-port or 8-port switch? - I suppose a switch is only required when I need to wire more than 2 satellites, is that right?...