When you get started with Natural Cycles, you will be asked a series of questions that will help the algorithm get to know your unique cycle, so you can have the most tailored experience possible.
If you made a mistake or need to re-answer these questions for any reason, you can do so by going to the menu in the top left corner of the app > Settings > Answer setup questions again.
Please note that the setup questions are only available for the first 60 days after activating your account, and after 60 days you no longer will have the option to modify these answers. By that time, the algorithm should have gathered enough information about your cycle from the data that you have logged since activating your account, so it will no longer rely on your answers to these questions as much as initially.
To predict your cycle, the algorithm always puts more weight on your most recent data, which is why, as time goes on, the answers to your set-up questions will have less and less impact on your app experience.
If you cannot answer your set-up questions anymore, the best thing to do is continue to log data regularly and the algorithm will quickly adapt!