@Kevin_Z Worth noting is that I now run my Mercusys MR47BE as main router with the same DHCP settings. That works OK, therefore I believe the GE550 is faulty. And now returned.

@Kevin_Z Yes. I had some 10 address reservations. After a few hours in service, the web-i/f stopped displaying them. Also, it said that there were no clients. In the Tether app they were visible, but...

OK, I get it. Big mistake by me to buy these gear... Will return them and look for better alternative stuff.

@terziyski The feature request was dated 3 years ago. Shall I interpret the answer as if I create a Guest Network in Router and AP, the users connecting through the AP will not be isolated from LAN?...

I have a TP-Link GE550 as router and a Mercusys MR47BE (company owned by TP-Link) as Access Point. If I setup Guest Network on MR47BE - or actually any TP-Link router in AP-mode. Is the Guest Network...

@Vendex I will give it s try. Unfortunately my GE550 needs replacement first as somehow it is broken as you can see in other threads. Vendex wrote @Uffez Yes - I’m currently using EasyMesh myself...