I have a ax88u main router in one corner of my house where all the feeds enter and a ac86u in AP mode set up in the opposite area further away about 14m with an ethernet back haul connected to the main. Upstairs I want to put an ac88u just for wifi extension it would be in a similar position to the main router but on the floor above. Well I can see the ac86u router in the ax88u but unable to aimesh it, and the ac88u when it's within 1 or 2m of the ax88u. I want to aimesh the ac88u from the main router but unable to connect would you have any advice or maybe for the individual routers modes more suited for AIMesh configuration. They all have static ip addresses and different band channels. Thank you.