I participated in a challenge from May 6 until May 13 and received 0 points and I participated in a challenge from April 1 until May 15 and did not receive any points from this challenge either.
I would be having the same question, I can understand how that can cause concerns for your activities. I would be happy to provide some more information!
You can earn a max of 100 Points per month for challenges. You will be awarded 50 Points for the first two challenges that upload data. The Points are awarded on the date that steps or other data reach the challenge and not the date that the challenge is joined.
Check out the post below for more information on challenges with Go365!
All about Challenges with Go365
Retrieving data ...