At last!
I've received an email from DeCode ME saying:
"Dear Participant,
We've received your saliva sample and are checking it to make sure we can extract your DNA from it.
Thank you for sending it. We will let you know once your DNA has been successfully extracted, or if we need you to provide another sample.
We're looking forward to studying your DNA once we have checked your sample.
Thank you, we can't do this study without people like you."
I sent my sample on 13th September.
Or was it October...?