Amazon limits the number of times per day we can call to their API and we are exceeding this limit each day. When that limit is reached, all remaining Amazon imports are canceled.
We recommend initiating a new import from your Selling>Import From Amazon page. The import will succeed once our API call limit resets. Some sellers find success by canceling and restarting the import if it is stuck or automatically canceled (you can restart the import on your Import from Amazon page by clicking the link to "Cancel automatic inventory synchronizing," then reimporting your items). Try starting at a different time of day. We do apologize for any inconvenience.