Unable to re-download some previously purchased Movies, on iPad

I upgraded my iPad to the 128gb version at the weekend and I'm trying to redownload the movies I had previously bought, which I've managed apart from 2 as when I find them in the cloud and go into them to download, I dont have the download button, only an option that says "This film can only be purchased as part of a bundle"

At the time of purchasing, these movies weren't part of a bundle.

I can re-download them on my laptop, but not on the ipad?

Any idea's?