@mechanic123 Ok, but I don't know, are you able to mesh if you activate MAB on the switch that AP1 is connected to? Maybe you have to approve AP2 on the same port to activate mesh.. you almost have...

@User797 try and upgrade in step, version by version, are you sure it is an EU unit? look behind the cover where you connect the network cable. it says version and region but very small font

@User797 Same thing with my EU device

@mechanic123 there is no problem. here is a description https://community.tp-link.com/en/business/forum/topic/829032?replyId=1573882

@GaRv3 Ok, I don't know what it could be then, have you tried connecting a PC directly to the IoT port on the switch?

@mechanic123 I don't think you can use MAB on the ES205GP, then you have to upgrade to SG2xxxx or higher model to get what you want