I had to restore my computer and when i log in to battlenet app i find what i have bought Before. WHen u try to install like Warcfraft 3 and frozen throne it says i already used the code. How can i install the games again without the code? Or what can i do?
It’s possible you claimed them on another Blizzard account, in order to locate that account you need to contact Customer Support with the keys to reclaim it.