I joined the Wahoo Challenge and already climbed over 7500ft according to the email I got:
Well done! You climbed 7,500ft // 2,286m during the Wahoo Climb Mission.
But in game it says I’ve only got about 5000ft climbed.
Also in the email it states:
Your Wahoo cycling cap and socks are unlocked and in your Zwift closet.
But I don’t see them available.