the same problem here … some activities counted, some not … not sure why, no info, no fix, no official response (except general “we are investigating”… which doesn’t help much).
Well, Zwift has “won” here definitely … I don’t care, I even don’t bother with complaints to support.
I love Zwift (my best indoor riding experience so far), but going to ignore all those “add-ons” … like missions, challenges, activities for some time, as those bring more frustration than fun …
Are you guys on Android? My partner does all her Zwifting on her Android phone and is also having the same issue. We added up all of her calories in January and the counter when you sign in is like 2,000 calories low of what it should be which will mean she won’t complete the event. Meanwhile I’m on PC and I finished over a week ago.