Trouble Downloading missing album after computer reset

So about three weeks back, I had to reset my C Drive to solve a problem that was happening with several programs on my computer. I backed up everything before my reset, so I was able to return everything to their places, aside from a few programs that I had to reinstall myself.

I've since found out that one of my albums is missing from its usual place on Itunes (everything else is fine), and whenever I look to reinstall it from the Itunes Store, I get no option to reinstall it- Usually on my ipad I would click purchase and it would offer to reinstall it onto the ipad again, however this is not available from either Itunes on the ipad or on the computer, as the bar is stuck on 'purchased'.

Is there any way I can fix this?