@glock-kai Just don't enable VLANs on them (which will tag packets) and they will work like a dumb switch on the default VLAN of the AP.

@Kimijoe Then my guess is the power circuit in the AP is fried which is causing the adapter to shutdown to protect itself. Power surges are bad and this is not unheard of. Sorry, but it is probably...

Have you tried defaulting the AP by inserting a pin in the hole next to the ethernet jack and depressing the reset switch for 15s or so? AP must be powered up when you do this.

I think this is related to a known bug where the remote end of bridge doesnt stay that way consistently, depending on what is connected to its port. We have seen similar issues when meshable aps are...

Have you tried a different cable? Are you using the supplied tplink adapter?

@HugoBoss1976 Configuring an SSID as a 'Guest Network' will prevent local-local access ie clients can only go to internet, and you can have up to 16 virtual SSIDs defined on an AP if I recall....