Help with batman-adv

is this the EAP-225 from this post ?

This is also a good tutorial for batman-adv configuration on OpenWRT : https://openwrt.org/docs/guide-user/network/wifi/mesh/batman
it will be easier to give configs if we know what "layout" your network is or what you are trying to achieve for example with only 2 mesh devices ( I made the drawing with draw.io ) :

or with 3 ( and more) devices


You can also search the forum for @jeff 's posts to fond many BATMAN related posts and configs