Then say it exactly as you named it. Those were purchased over the last few years so im not sure how that will work.

How To Set Up Multiroom Playback Across All Of Your Alexa
Alexa group not working. Unplugged all the echo devices echo dot echo echo show echo spot echo plus also unplugged your router and modem leave them for 5 min at the unplugged stage now plugin your modem first wait till your modem gets back to online mode after 1 2 min plug in your router after that. In the alexa app delete and re add the smart device youre having trouble with. Multi room music does not play with alexa make sure that your device group name is something alexa can easily understand. If you have speaker groups go ahead and tap one. This way you can use voice controls to control multiple devices with a single command such as turn off bedroom lights if alexa. A smart home group is a collection of smart home devices contained within a single room or category throughout the home.
Say alexa turn off bedroom lights. 3 make sure your multi room group is functioning open your alexa app. Make sure that your devices are powered on and connected to the same wi fi network. This is because the bbc sounds skill doesnt support the alexa preferred speaker setting. Youll be brought to the edit group page. So now the conversation with amazon will be about getting refunds for the devices that dont work.
Then reconnect and relaunch. I tried deleting the alexa group but it makes no difference. From here you want to make sure all the speakers you want to. Return to the alexa app home screen if you arent there already tap on devices in the lower right corner tap the icon in the top right corner tap on add group name the group by typing or tapping on a room name then tap next tap on all of the devices you want in this group then tap save. Manually create a group in the alexa app and add all the lights you want to that group assuming this group doesnt exist in the alexa app name it the same as your hue group. For example the smart home group master bedroom would contain any and all smart home devices in the master bedroom.
The alexa app enables you to link smart home devices in a group. One of the more common errors users encounter is alexas smart home groups do not work. Set a preferred speaker for your device group. If this doesnt work do a hard reset of both your dot and the device. Use names with at least two to three. But the important part is that i have a working device and group in each room and i can just say alexa turn on lights and the appropriate lights come on.
Scroll down on the devices page to review speaker groups. If you ask your echo dot alexa play piano chill playlist it will output to the playbase.