Yeah, based on what that says, the
non-watermarked downloaded redemption forms (version 1 or version 2) or the in-pack redemption form are OK.
You can't use the current one on their site (version 3), which is the one with "SAMPLE ONLY: IN-PACK FORM REQUIRED" stamped across it.
(after 6 years of these mail-aways, it really shouldn't be this hard
)