When running Mailmeteor, you - unlikely - may have an error message like: "Oops. Asteroid on approach." or "Oops. Houston we've got a problem."
It can happen for different reasons:
The add-on has experienced a period of inactivity. Closing and re-opening the add-on will immediately resolve that issue.
The add-on has detected multiple Google accounts. This happen when you switch to different Google accounts on the same browser. To solve this issue, try to run the add-on in "incognito" mode (or private browsing).
The add-on lacks of authorization. It may happen, when the add-on has lost permissions to run. You might have to reinstall the add-on here. If you do so, your information and paid license will not be lost.
Still having an issue and need a helping hand? Contact us. We'll be happy to help!