I have music unlimited but when i ask any of 4 echo devices to play songs it says i dont have music unlimited and ask if i would like it, any ideas?
Hello liftman and thank you for joining the Community :-)
First of all, make sure that your Music Unlimited membership is currently active. You can view and manage your Amazon Music Unlimited subscription from Your Amazon Music settings. You can also manage your subscription from the "Settings" menu in the Amazon Music app for Android and Fire tablets.
Then, as mr_a wrote, check that all your Echo devices are registered on the same account where the Music Unlimited subscription is active. You can check the list of registered devices on your account from Manage Your Content and Devices.