I had 1 ID and p/w. With me.com or icloud.com a new ID and p/w. So I have 2. ITunes match does not work on all devices. What do I do?

When I started with the Iphone and before me.com or icloud.com I had an ID with my regualr email as my account and a password. All purchases, etc. went through that as the account. When me.com and particularly icloud.com came about I had another designated ID with an extension of @me.com or @icloud.com also with the same ID and its own password. Sometimes purchases would come under one or the other account. I just decided to go with ITunes match and paid for it, the computer said it worked, and so did the email confirmation. However, when I tried to slide the bar on the IPhone 5 it says I am not signed up perhaps because it is one but not the other account ID names. Oddly enough the Ipad 3 accepted it. What do I do to make sure that the devices are properly sharing; otherwise, that was a waste of money and I need to stop it?