Apparently the region is important for this, it seems like people in the areas: Europe, Africa, Asia, or Oceania are subjected to this rule:


Entries: To enter the Promotion you must follow the procedure for entry set out in the Key Rules. All entries must be received before the end of the Entry Period (date of postmark, if mailed). Only one (1) entry per person is permitted unless otherwise stated in the Key Rules.
Whereas people in the following areas: North America, Central America, South America, or the Caribbean this rule:

Eligibility to Enter. THE PROMOTION IS OPEN ONLY TO LEGAL RESIDENTS OF THE JURISDICTIONS IDENTIFIED IN THE INITIAL RULES (THE “PROMOTION JURISDICTION”) WHO ARE ABOVE THE AGE LIMIT IDENTIFIED IN THE INITIAL RULES AT THE TIME OF ENTRY. RESIDENTS OF JURISDICTIONS OTHER THAN THE PROMOTION JURISDICTION MAY ALSO BE ELIGIBLE TO ENTER THE PROMOTION UNDER TERMS AND CONDITIONS APPLICABLE TO THOSE RESIDENTS’ JURISDICTIONS IF THE SPONSOR (DEFINED BELOW) OR ITS AFFILIATES HAVE POSTED SUCH TERMS AND CONDITIONS. If Entrant is under the legal age of majority in Entrant’s place of residence (a “Minor”), Entrant’s parents or legal guardians must read, understand, and agree to the Rules on behalf of the Minor. To be eligible to win a prize, Entrant’s entry must be completed and received by Sponsor in compliance with the Rules and all other instructions provided by Sponsor. Directors, officers, shareholders, and employees of Sponsor, Sponsor’s affiliate companies, Sponsor’s vendors, Sponsor’s professional advisors, Sponsor’s advertising and promotional agencies, and each of such employees’, officers’, shareholders’, and directors’ immediate family members and/or those living in the same household (whether legally related or not), are not eligible to enter the Promotion or win a prize. For purposes of the Promotion, “immediate family members” are defined as spouse, partner, parents, legal guardians, in-laws, grandparents, siblings, children and grandchildren and “those living in the same household” shall mean people who share the same residence at least three (3) months a year, whether legally related or not. There is a limit of one (1) entry per person, per household, per email account, and per any other applicable account described in the Initial Rules unless otherwise stated in the Initial Rules; multiple entries shall be excluded and disqualified unless otherwise stated in the Initial Rules.
These links are mentioned in the Lodestone notice.