We have three Echo Dots in the house and want to be able to call each from any of them. I do not want Drop-In enabled as I don't like the auto-answer facility.
Originally, 2 devices were registered to my wife and 1 to me. The original 2 were and are working fine. You can say "Alexa, call <dot>" and it will call the other dot. With the 3rd registered for me, neither of the old devices could see it and it couldn't see the other 2 (even though all are connected to same WiFi and appear in app on both mine and my wife's phones.
Deregistered #3 and registered it to my wife. It can now initiate a call to the other dots but instantly hangs up (eg, it will say "calling <dot>" but then the ring light will go off and nothing further will happen). The other 2 just say <dot> unavailable when trying to call dot #3.
Any ideas/assistance would be greatly appreciated.