when trying affline activation I get an error : you licence is invalid.
It's not clear what do you mean with this:
- Are you trying to activate the OLD O'Hare, to be able to use the discount for the new one ? If yes, have you read the linked thread ? It explains why the OFFLINE activation cannot work with an old Esellerate number. You MUST be online to do that, because old Esellerate numbers cannot be activated offline by the new activation system.
OR
- Are you trying to activate the NEW O'Hare ? In this case, the offline activation will surely work.