I have a single large WIFI network with a combination of Deco X50 and E4 (the core is a X50). Between the X50, no problem. When I add E4, the enrolment procedure work but after some seconds, the E4 appear unavailable ...

I tried to change the orders, to update the firmware, to reset them, to create new network with just the E4 (it worked) but failed with the addition of an X50.

I don't understand ...