I have three Echo Dots. One in the living room, one in my shop and one in my travel trailer. The one in my living room will not play songs. The other two play most anything I want. I have a Prime account and my wife iws a member of my household. Apparently the Echo Dot in the living room thinks it belongs to my wife. As a Household Prime member, she does not get free song streaming. How can I change this to my Prime account?