Hi there

I have a set of 3 pcs of deco AC1300 working perfectly fine at home with green solid lights on all , 1 master + 2 slaves

Now i have bought a set of 2pcs of same deco AC1300 and wish to connect them to the existing network of the 3 i have but when i plug them into the mains only the blue light keeps flashing even when in closest range of the master

Can somebody guide me through this please?

Thanks in advance