Accept (iMovie does not appear after restore)

i restore macbook pro imovie doe not appear . have been app centre , can see there accept under after click , asked password message saying 'you've accepted ' bbut when click ok des nothing , 'what do please'?

clicked restore lion os x must have erased because left programs come mac , except imovie. yes sorry meant mac app store

 

how did restore mac?
, "app centre", mean mac app store (mas)?

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