Your Kunduz account and memberships will be identified to your phone number. You will receive a confirmation code on your phone in order to log in to your account. That is why we need your phone number.
Kunduz Membership Packages are valid till 31st May or when your number of questions end.  
When your package is expired, you can still access the solutions of the questions you have asked before, whenever you want.
You can go the Usage Statistics on Settings to see the expiration date of your package.
We have packages valid till 31st of May until now but soon we will have subscription packages which are automatically renewed each month. We state this explicitly both when you purchase the package and on our User Licence Agreement. If you do not want your membership package to be renewed, you can inform us of your request via the Support section.
You can go to Usage Statistics on Settings to see the remaining number of questions you can ask.
You can go to Profile Information on Settings to change membership information such as e-mail address, date of birth, and grade.
805 La Para Avenue, Palo Alto, CA, 94306 United States