New Host Referral Payment

Has anyone else been under-paid for referring a new host? I recently recommended a new host with a link for a $240 payout. This new host successfully completed hosting their first guest (on their third now) and I was paid $120 from Airbnb for this referral. I’ve been in touch with them and spent hours now hearing a whole host of conflicting reasons why I am only getting half of what they contracted. It’s so frustrating. I’ve never even seen a link for $120 for a new host referral - but $240 is a ever present banner on my Airbnb page. Help greatly appreciated.