Join through a friend's invite

Join the right merchant through an invite before your first qualifying purchase.

Use the merchant-specific link your friend shared, not a general invitation to Kardy. An existing membership cannot be referred retroactively.

1. Open the invite

   Check that the link opens the intended merchant’s join page.

2. Sign in and verify

   Use your existing Kardy account or create one if needed. Complete email verification and return to the joining flow.

3. Finish joining

   Complete the merchant’s join action. Referral details are retained through sign-in and verification.

4. Make your first qualifying purchase

   Show your QR and let authorised staff issue your first actual stamp. The server checks the referral requirements at that point.

Done when: your new membership is visible. Joining alone earns no bonus; after the qualifying purchase, check Invites you joined.

Read the qualification rules before expecting a bonus. Both members’ account and membership requirements must already be met at the first staff-issued stamp; a later visit does not fix qualification retroactively.