We work constantly on improving our app, and therefore issue regular updates. In order to avoid any malfunction on the part of your app you should make sure that your operating system is always up-to-date. For example, our app is currently available from Version 4.1 of Android and 9 of iOS. However, if the app does not function correctly in spite of this, we recommend that you should close the app and then start it once more. Rebooting your smartphone can also help to restore the normal functions.