Hello,

Problem:

I recently upgraded to an Archer BE400 router. Initially it works fine with all devices, however after a day or so multiple devices will disconnect and remain disconnected, throwing an issue when attempting to reconnect to the network. Samsung Phone and Tablet will give "Couldn't get IP address", smart home devices show "Not Connected", appliances like fridge, oven, printer, and grill show wifi icon blinking as though it's not connected.

Solutions Tried:

I've tried restarting the router, restarting the modem, hard resetting the router, forgetting the network on devices, split network from easy assign to dual band, tried to adjust DHCP settings, tried assigning static IPs, and a few other things I'm forgetting. I've also updated firmware. I have not tried the MLO network as I thought another band would cause further issues.

I'm starting to wonder if this is an issue with the router itself, I do have around 20 devices probably but the connection is only showing 4.