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1. when you are checking the water consumption, water pressure or system temperature, it is always stucking in Data loading.The idea is great but you need to add some interoperability like IFTTT with other brand.

2. Giving you an example: I have Daikin smart air conditioners in all of my rooms so if the Grohe sensor sends information about relative humidity I would like to be able to turn a specific or all AC into drying mode if the humidity needs to be lowered.

3. it also took about six tries to get the app to recognize the water meter, requiring multiple resets or reinstalls.Update: sadly I can not give less than one star... Recently changed my router, no way to update SSID or password apart from reinstalling.

4. Cant get hourly values for water consumption, so how bad is a microleakage? After restart historic values are not available, takes minutes.This app is basically useless.

5. It says 100% while my other sensor says 60%!? When I click the notification, it opens the app but I need to sign in again!? When I open the app directly, it isn't necessary to sign in again.always gets error when refreshing.

6. Not very user friendly at all, too many options in different places and the tracking (potentially the most useful feature) has never worked, so I can't see how much water getting through, for example.

7. Can't remove the unit to reinstall it, and can't edit the wifi connection.very terrible using experience! Aways being error when refresh the app by pulling down.

8. This app delivers nearly none of the features that would be useful for remote monitoring of water usage or leaks.

9. I'd like to be able to pour water using the app but the app rarely starts up correctly and often crashes.

10. I noticed I'm unable to delete the old entry of the device.Having the same problems as others on my Note 9.

11. Please fix tracking!Device run out of battery without notification.

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

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

2. Fix GROHE ONDUS Server issues & Internet Connection

1. Check network connection: An unstable Internet will make GROHE ONDUS 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 GROHE ONDUS not working. Make sure all VPNs are off
3. Enable background data: When Background data is turned off, GROHE ONDUS may not be able to connect to the Internet when running in the background.