The referral links are working just fine. If there was a problem, then it was going to affect all incoming referrals instead of some of them. What we have troubleshot in the past is clients who are using a referral link, however, their Adblocker (or similar) is enabled, thus why an account cannot be attributed to a link. Nonetheless, be sure to reach out at info@trading212.com, and our team will check further each case.