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Your existing affiliate links keep working
Refgrow's script "detects when users arrive via referral links (?ref=CODE)" and stores the code in a cookie (their installation docs, checked 6 September 2026). Our script reads ref too, plus eighteen other platforms' tags. So a link a partner posted two years ago pays the same person from the day our script goes on.
One thing to know. ref is the most common tag in the category, so a link with it does not tell you which tool the partner came from. It does not need to. The code after it is what names the partner.