Hello everyone, thanks for bringing this to our attention.
We know a few games were affected by the time-limited challenges over the last week or longer, but now all challenges should be restored on the Ubisoft Connect launcher.
I am sorry to hear that your challenges do not seem to be progressing, however. We usually ask players to wait a full 24 hours after taking part in a challenge, to see if the progress has then been tracked after a short delay.
If you have completed a challenge and the challenge has not progressed at all, after a 24 hour wait, please let us know what challenge this has affected for you so we can pas this onto our Division game team.