Individual Volume Control

I have 6 Sonos speakers in 4 different rooms as well as 2 units outside that I use to listen to the TV playing in the living room. After turning on the TV, I have to go the Sonos app and click on "Everywhere" in order to activate all the speakers. Each speaker is set to the volume that is best used in that space. For years after my Sonos was installed, I could tell Alexa to change the volume on the Sonos in the room I was in, and as long as the other speakers did not hear the command, they did not change volume. A while ago, after working with Sonos techs on an unrelated problem, I was no longer able to do this. When I tell Alexa to change the volume in one room, it changes all the speakers. If I am washing dishes and want to quickly change volume to hear something, I now have to dry my hands, go find my phone, open the app, get to the right location, and manually change that speaker's individual volume. I have spoken to Sonos and was told it must have been a feature that disappeared during an update. Is this true? If so, THIS IS A REAL INCONVENIENCE!