@David-TP thanks David for the quick revert. So intially i set up S7 as my main router then added M4R as secondary and E4Rs. But it was not successful. When I check the hierarchy of adding deco units...

I recently added S7 as my main router. The rest of the deco devices i have (M5 and E4) are unable to join the new network even after performing reset and other troubleshooting steps. Color remains to...