Videos on same Apple ID play on iPod but not iPad?

Hi, i just recently purchased the iPad Air and logged it with the same Apple ID that all my other devices use. After a day or so i logged out of my apple id and into another one that i use for work. The email addresses are very similar along with the passwords so I did not notice until after I had downloaded something and it gave me the 90 day warning.

Both my iPod and iPad are now back logged into the same account but my iPod will play videos I downloaded in the videos app but my iPad won't. when I try to download them it just gives me the 90 day warning even though I am back to the original account and can download other things fine.

I'm not sure what to do as I don't want to wait 90 days to be able to watch the videos.

thanks

IPad Air running iOS 7.1.2 and IPod touch 5 running iOS 7.1.2