I talked TriDef Support and they say:
That code unlocks the 30 day trial. The discount code should be provided separately from Freedom or the subscriber where you learned about the feature.
Like YYFYE49DTTC4F4NY is for the 30-day trial, but you also have YYFYE49DTTC4F4NY for the 20% discount.
If what TriDef Support say is right, YYFYE49DTTC4F4NY is only for 30-day trial and not for the discount.
That code unlocks the 30 day trial. The discount code should be provided separately from Freedom or the subscriber where you learned about the feature.
Like YYFYE49DTTC4F4NY is for the 30-day trial, but you also have YYFYE49DTTC4F4NY for the 20% discount.
If what TriDef Support say is right, YYFYE49DTTC4F4NY is only for 30-day trial and not for the discount.