Hello! I already have a adobe photoshop and lightroom account that I have been using on my pc. My grandparent just renewed the account for Christmas and i am trying to set it up on my new macbook. it wants me to buy it though and it is not recognizin

confirm that your account shows the subscription(s) you expect (and that the adobe id used in the next step is the correct one) by logging in here and checking your subscription status, https://www.adobe.com/account.html

then, if it is current, sign out and then back in to your cc desktop application using the same adobe id used with the above link:  http://helpx.adobe.com/creative-cloud/kb/sign-in-out-creative-cloud-desktop-app.html