Why I often get trouble on my by.U apps?

Try to do these following things :

1. Try to restart your gadget 
2. Make sure you internet connection is stable 
3. Try to clear chache and data Apps in your gadget setting menu
4. Check the date and time setting on your gadget
5. Make sure your phone is using the latest version of OS
6. If it still can't, try to Uninstall and reinstall your by.U App

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