Hi,
thank you for your email! The last email that I got from you was on August 20. I answered that email. Afterward I cannot find any emails from your address.
If you cannot start it any more, you can try to rename the directory C:\Users\yourUser\AppData\Roaming\CalenGoo to something else. Then stop CalenGoo using the task manager and start it again. This way you should be able to start it as if it had been freshly installed and then re-enter your Google account.
Does that work?
Please try this and don't hesitate to contact me again if you still have problems or if you have any questions!
Kind regards
Dominique