As an update, I've got as far as mirroring host SSID. But now I can no longer access the web management page.....? Is this all I need to do to make this work? or is there anything else that will help...

Hi, apologies if this is asked elsewhere or a stupid question but... I just bought a TP-Link AC1750 to extend my network. It works fine on the basic setup, and has created two new networks (2.4 and...