Disable Challenges
I just logged in to check my email and some new 7 day challenge popped up. There seems to be no way to disable this. I want to turn them off.
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Ashley White
shared this idea
The Back to School challenge is only opt-in. So you should only see this once and if dismissed, you won't see it again. So there is nothing to disable!
For "Streaks" you can certainly disable that by going to the left hand navigation: More > Your Streaks.
Hope this helps!