I had the same issue. I had to reformat my system multiple times because I was building a new PC and ended up using the activation code multiple times. I called them and they said that they won't be able to do anything because it had already been used 5 times.
Turbotax tracks everything we do but they say they cannot track whether the activation was used to file the taxes. That's a blatant lie. I'm a Software Engineer and I know how software works. They absolutely track each and every thing you do. They just want me to buy another license code.
