Same story for me. I had to retro claim 7 of my flights, maybe because I have two names? I noticed as I took some of the later flights in December that more of them started to auto credit. My very last flight for this promotion was on Kenya Airways, that one auto credited in a couple of days. BUT Vietnam Airways (I took it all the way at the beginning of the promotion) and Tarom. Those 2 flights if I try to retro claim them on the app it doesn't work, it gives me an error. They are booked in the right classes.
The second issue is that I already have 14 flights officially registered flights and I have not received any of the "bonuses". You are supposed to get a bonus when you complete 5 airlines and a bonus when you complete 10 (100,000 points). The bonus you get when you complete the 15th is supposed to be the 1,000,000. I am glad others are posting their situation it means many of us are in the same boat and is not an isolated issue.