Hello

I have successfully installed a mesh of 3 Deco P9 (access mode) in the house of my son. 

This config has worked during numerous months without any problems.

I recenttly offer to him 3 complementary P9 to extend the mesh. 

The installation of the 3 new ones was problematic (cannot find deco ...) but finally succeed. 

The problem is that now the system is totally instable. 

Trying to resolve it, i removed the new decos one by one. But after coming back strictly to the initial config with 3 decos. 

Worse . Now one of the satellite frequently becomes red and impacts the whole system. The only stable system is only with two decos up.

Do you have a way to debug those problems?

Thanks in advance