Published by BerliTec GmbH

Report an issue with Koelner2go.
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Why should I report an Issue with Koelner2go?

  1. AppContacter will directly Email your issue/feedback to an apps's customer service once you report an issue and with lots of issues reported, companies will definitely listen to you.
  2. Pulling issues faced by users like you is a good way to draw attention of BerliTec GmbH to your problem using the strength of crowds.
  3. Importantly, customers can learn from other customers in case the issue is a common problem that has been solved before.

Koelner2go Customer Insights

Steps to Troubleshoot & Fix Koelner2go Issues

1. Fix Koelner2go Not Working/Crashes/Errors/Unresponsive & Black/White screen:


  1. Restart Koelner2go: Restarting the app will resolve most errors.
  2. Update the Koelner2go App. Here is how:
    1. On Android goto PlayStore » Search for "Koelner2go" » Open Koelner2go » click "Update".
    2. On iPhone, goto AppStore » Your profile » Available Updates » Check for Koelner2go » click "UPDATE".
  3. Clear Koelner2go app cache: Clearing cached data will force your app to retrieve the latest data directly from Koelner2go servers.
    1. On Android, goto Settings » Apps » Select "Koelner2go" » click Storage » click "Clear Cache".
  4. Check Koelner2go app permissions. If any of these permissions required to use your device's features are disenabled, Koelner2go might not work.
  5. Uninstall and reinstall Koelner2go. If nothing else has worked, completely uninstall Koelner2go then reinstall.
  6. Restart your device. Last, restarting your device can often clear most problems causing Koelner2go not working


2. Fix Koelner2go Server issues & Internet Connection


  1. Check network connection: An unstable Internet will make Koelner2go be unable to connect to it's servers. Ensure your wi-fi is working then restart app.
  2. Disable VPN: VPN can cause connection errors and lead to Koelner2go not working. Make sure all VPNs are off
  3. Enable background data: When Background data is turned off, Koelner2go may not be able to connect to the Internet when running in the background.

Reported Issues