Please choose the operating system which you are using and follow these instructions.
Android:
Please go to Settings -> Application Manager, select ASKfm and tap ‘Force stop’. Try to reopen the app.
If the problem still persists, please remove the app, and install it once more from Google Play.
iOS:
Please remove the app, and install it once more from App store.
If the issues you experience with the app does not stop even after you have done these steps, write us directly and we will help you to solve it: http://bit.ly/ASKfmHelp