Q: Linking i tunes match to new Apple ID

I subscribed to i tunes match a few months ago but I have just changed my apple ID.It now says I have no i tunes match but i have an email confirming and money taken out for it,I am not sure if it was even linked to old address as I hadnt had time to try it.I have been able to get other things working with new id like apple TV,facetime and all the other addresses I had to change.I think that my basic problem may have been not signing out of everything before I changed my ID.

I am pulling my hair out with this one so hope someoen can help this Granny!