Problems with downloading music

I bought multiple albums and singles on my itunes, but I had to change my email address on my Apple ID as I was experiencing problems when asked to input my password etc, but when I've come to redownlosd my paid music to my itunes on the computer it won't give me an option t download it. It shows me that I've purchased the songs but doesn't give me a cloud button or anything like that and it's stressing me out. Any help would be greatly appreciated. Thanks.