The Swan Force Referral Program is an affiliate marketing program to support our users. While only people with US bank accounts can buy Bitcoin with Swan, anyone globally can join Swan Force and earn payouts in BTC.
People who join Swan Force will receive a custom promo code link. Anyone who visits that custom referral link will see the image and message you choose (see here for Max Keiser's example).
If anyone signs up with Swan Bitcoin through your promotional link they'll get $10 of free BTC, and you will earn 0.25% of their Bitcoin buys for the next 3 years (with a $5 minimum).
(Note: This program that is separate from the referral program and referral code offered in your Swan Bitcoin dashboard)