I occasionally have gotten the error code over my 4 years of using the app. The following steps have all worked for me at one time or another:
• make sure your app is up to date
• restart your phone
• uninstall/reinstall the app
• keep trying till the app sorts its shit out
• finally just wait it out
Eventually it does work. I have never 'lost' points. Sorry I don't have more of a direct answer.