I thought it should be automatically credited. The thing is it's hard to track since you can't even see your referrals in your account.
I passed your question through the team and while this is not yet available, right now, automation of 'Refer A Friend program" is in progress, and should be done soon. Plus, players will be able to view details of it in their profiles, including which players they referred and how many.
The team is working to ensure the website operates as seamlessly as possible