I while back I merged an old Lifehacks account with my main account. Before the merge, I asked one question using my old account.
The correct amount of questions are shown in my lifehacks account activity summary:
Yet it still displays "0" Questions on my Network Profile.
The accounts were merged over 5 months ago and I have since answered 2 questions, so this doesn't seem to be just an update delay or a delay till other activity occurs.
Similar questions have been asked, yet none seem to have a relevant solution:
Merged accounts don't show correct post count on network profile? - the only comment possibly helpful seems to indicate that this problem should be fixed as soon as there is other activity in the account. I have since answered 2 other questions so there has been activity.
Question not appearing on network profile (probably due to account merging) - in this case, it seems to have been a one time reindexing delay error.