An offer on WOW TRK may display a monthly or daily cap. This can either be based on conversions or payout.
Once this cap is reached the offer is effectively paused and no traffic will be sent to the offer landing page until there is cap available.
For example, if the monthly conversion cap is met for September, once October starts the offer will automatically start letting traffic through again and redirect the user to the offer landing page.
If you have more questions about caps, please don't hesitate to contact your account manager who will be able to explain these in further detail to you. You can also discuss cap increases with your account manager if you believe you will exceed the cap.