Unable to redeem rewards

Hi all,

I'm not sure where to post this but I've concerns with 2 things:

1. When I try to redeem any gift card, it says I need to earn 500 coins by walking - I've already walked 29000 steps as per the app statistics.
2. The price of the gift cards has increased - earlier it used to be 3000 coins for a $5 gift card but now it is 5000 coins for the same gift card value.

Please help me, thanks in advance