You can access your bonus wagering chart by logging into My Account->Bonuses. 

In that menu, you can verify which bonuses you have currently Available, Active or Ended Bonuses.

Once you click on “Active“, you will be able to check the wagering progress and all terms and conditions for your currently active bonus. If there is a game that you play depending on the bonus active in your account, you can see the lobby where the game remains open by hovering over the "Unfinished Game" option.

If a game related to the bonus has not been concluded yet, you will not be able to cancel the bonus.