In most cases, an outdated app Version is the problem. Please ensure that the latest Version is always installed on your mobile device.

Tap on the question mark in the app. In the bottom box, you will see the app Version. If this box is green, you have the current Version installed. If the box is blue, your Version is outdated and needs to be updated. If you Click on the included link, you will be redirected directly to the update option. You can also follow the steps listed below.

If your question mark symbol has a red dot, this is another indication that your Version is outdated.

Go to the App Store on your mobile device. Search for the docu tools app using the search function. Click "Update". Alternatively, you can Click on your user picture/initials and open your Account. Drag the screen down to refresh the view. Below "Personal Recommendations" you will see all available updates. Now you can either install all available updates of all listed apps by tapping "Update All" or you can search the List for the docu tools app and update only this one.

Go to the Play Store on your mobile device. Search for the docu tools app using the search function. Click "Update".

Please submit a Service ticket and describe the error as precisely as possible. Our Service team will be happy to assist you.