iMatch won't work with ipad

I Have rC) Bose sound link colour Bluetooth speaker xcently subscribed to iMatch and uploaded my entire iTunes library.

it was immediately available on both my iphone and my iPad.

however, when I make changes to my library e.g. new music, this appears on my iphone but not my iPad.

as far as I can see settings on iphone and iPad are the same.

software is up-to-date.

CAn anyone help?

thank you