Good game but not working with OS X Yosemite

I bought this game last year in feb and played it alot just came back to it after I updated to OS X Yosemite and now I cant play I can get on to the main menu but i cant play SP/MP/or zombies. Its ask me to “Restore Puchases” but when I click on it nothing happends as soon as this is fix tho I will right a new review for it and rate it 4.5 out of 5. till then its going to have to be 2 out of 5. payed $59 for this should never happen. hope it’s fixed soon

QuadSquad™ about Call of Duty®: Black Ops, v1.18