It happened sometime in the middle of December, around the 10th, I believe. I figured that because I've finished my MCC/JOC on the 14th Dec and was unable to access OAA's Ryanair page. CAE worked fine tho. About 2 weeks later, OAA was suddenly working again, so I've registered to that one as well, who knows.
Speaking of which, I'm really curious, is there anyone that registered after 14th Dec that was contacted by Ryanair since that?