LEDE and Dlink DCH-M225

I ended up with two Dlink DCH-M225. They are wifi repeaters and DLNA/Airplay clients (with a jack port) and I get they are supported https://lede-project.org/toh/hwdata/d-link/d-link_dch-m225_a1
The problem is that they don't behave well when two of them are in the same network (and I'm NOT thinking of multiroom synch playback but independent playback). Main problem is that, when I extend with the same SSID, they end up connecting trough eachother and playback won't work at all if they are not connected directly to the router.
So, can LEDE help me? Installing it will still retain the DLNA capabilities of the device? With it, can I somehow totally disable the repeater function (disable the radio not only hide it some how) which I don't really need? If, yes, what would I have to do for that after flashing it?
In case LEDE can't help me with this, any other suggestions in order to disable the repeater functionality on them would be appreciated or at last make them work without setting a different SSID.

You can configure LEDE to only connect to a specifc bssid (the MAC address of your main router's wlan card).

That would be cool if I can't disable the extending functionality.
Unfortunately I don't know if it will still function as a DLNA renderer and afraid to try it as I also stumbled on this: Ethernet-less Dlink DCH-M225 after install accessing problem

You can enable a telnet root shell, then disable the repeater. Unfortunately, the filesystem is in RAM, so you need to re-apply such changes on reboot.