As of August 21, 2017 Uber is no longer tracking acceptance rate or cancellation rate against Quest promotions. Once the trip tier is completed you will receive the amount offered and be able to cash out these earnings.
The rates displayed on your Ratings tab are your overall acceptance rates and cancellation rates. These overall rates will not impact whether or not you qualify for Quest promotions.
To review details for your current promotions:
1. Select Earnings from your app menu.
2. Tap Promotions.
3. Select any promotion to review.