My cd key is not working

[Lionheart-12537]

You can check TheDarkJedi’s answer in this thread…

Help with D2 cd keys

You’ll need to redeem your old 16 character keys for both Diablo 2 (and Lord of Destruction if you have it) in order to bind them to your Blizzard account and convert them to the new 26 character keys. Then you’ll need to install the digital download version of both Diablo 2 and the Lord of Destruction expansion. To redeem/convert your old keys and bind them to your Blizzard account: From this forum, click your profile name on the upper right, Account settings. Enter the 16 digit key in the “R…