Got a reply from SAS today, took a bit of time but they came through.
Thank you for your mail
You are so very correct. Correct point accrual for this flight should be 900 EuroBonus points.
I have now added 300 points to your account.
Best regards, Med vänliga hälsningar,
Love restored, thank you SK
P.S. They were added as "extra points". Fine as long as I am not short less than that amount for status qualification :/ Will leave it as is for now.