Yes, I think I am attempting to use the proper email.
To be 100% accurate, this is the one binded one the order number CC4E90, for Guru install, the 2017-01-12.
As I said above, i'm not 100% sure, but I thought I registered the original account with my Github account.
EDIT: My email on this account seems to be now free.
Is there a way to recover the old account, or should I consider to move on with this one?