Etsy is planning to make some updates on August 19 and 26 which will result in the site and API going offline for a number of hours.
They estimate that the downtime will occur for 4 hours, beginning 3am ET (GMT -4).
This downtime mean that Craftybase will not be able to import orders and expenses during this time, however failed data fetches will be retried after the maintainance window is complete. Scheduled daily imports outside this downtime will be unaffected.
Update: Etsy has just announced a third window for downtime on the 23rd August between 1am ET to 7am ET.