Okay found my CD Key from my Old Diablo 2 Set. The CD Key i use now is from downloading the game from blizzard.com/store. the cd key i have here in my hand is 16 characters long and the one for the game is 24? Is there anyway this 16 will work like how do i enter ANOTHER cd key?

Bump

Once you already have a temporary ban, changing the CD keys will not solve the problem. You will just have to wait for being unbanned again.