Why doesn’t FCC tasks add to my github contributions any more?
Because you’re not contributing anything on GitHub?
in the past completing coding challenges was adding to my github contributions
so they changed it?
So it would seem. It’s also possible that the GitHub API changed and either FCC can’t add GitHub activity to your account anymore, or the code that previously did so no longer works. FCC does have its own heatmap and streak counter (although I think they’re still buggy).