From version 6.4.8 of WatuPRO (with the Intelligence module installed) there is a new feature for paid quizzes:

It gives you a new level of flexibility allowing you to sell a fixed number of attempts on a quiz for a fee. Here are a few examples how it works:

• If you allow only one attempt on the quiz, a payment will allow a new attempt.
• If you allow for example 5 attempts, after the 5th attempt the quiz taker will again be shown the payment option and let them have another 5 attempts.
• If you allow 2 attempts per 24 hours and the quiz taker uses them, they can purchase another 2 attempts for the next 24 hours.
• If you have selected that the quiz can be re-taken only after at least 12 hours from the previous attempt, user who does not want to wait can pay and void the limitation.

This new flexible option will give you even more opportunities to monetize your quizzes.