The affiliate program was there all along — the card wasn't
If you are on a paid plan and have never seen the affiliate card on your dashboard, that was our bug, not your plan. Nothing about who may join has changed — the rule always admitted every paid subscription. What was broken is that you could not see the way in.
Two separate things pointed the wrong way:
The reward card did not render. The dashboard decided whether to show it by checking whether your plan name began with "Pro". When plans moved onto credits, the names changed, and that check quietly stopped matching any of the plans we actually sell. The check now asks the same question the rest of the product asks, so it cannot drift apart from it again.
The terms named a tier. /legal/affiliate-terms said the program was for agencies "with an active Pro subscription". If you are on Scale, you read yourself out of something you were entitled to. The eligibility wording — in the terms, in the panel, and in the pricing FAQ — now says any paid subscription, which is what the rule has always meant.
One more thing that follows from the same fix: if you cancelled your subscription but are still inside the period you paid for, you remain eligible to join, and the card now shows that. It always said so in the terms.