Sometimes you may observe sync issues with Canary. These could include Archive / Delete / Move failure, or slow fetching of new email, etc.
This is most commonly caused by the email provider refusing client requests due to ‘Too Many Simultaneous Connections’, a situation that arises when you are logged in to the same email account on several different apps and devices at the same time.
You can verify if the issue was resolved by reviewing logs: https://canarymail.io/help/how-to-email-logs/