If your system time inaccuracy, that will affect the accuracy of Pomotodo statistics. In our new Web Version, the notification "System time not matched with server" would appear when the time difference from system and server is more than 30 seconds.

You can check the difference between your system time and standard time by visit http://time.is/.

If your system time is incorrect, refer to the following methods to synchronise​ the time:

Windows

1. Open Date and Time by clicking the Start button Picture of the Start button, clicking Control Panel -> Clock、Language and Region -> Date and Time.

2. Click the Internet Time tab -> Change settings.
   Administrator permission required If you're prompted for an administrator password or confirmation, type the password or provide confirmation.

3. Select the check box next to Synchronize with an Internet time server -> time server, and then click OK.

Learn more：http://windows.microsoft.com/en-us/windows/set-clock#1TC=windows-7

Mac

1. Choose Apple menu -> System Preferences -> Date & Time.

2. Then select to set the date and time automatically or manually.

3. Automatically: Select “Set date and time automatically,” then choose the network time server for your region.

4. Manually: Deselect “Set date and time automatically,” then manually enter the date and time. When you’re done, click Save.

Learn more：https://support.apple.com/kb/PH21911?viewlocale=en_US