There’s going to be a scheduled maintenance break next Friday evening (17 Aug, 2018) starting at 7pm EET. Estimated downtime per account is around 15-30 minutes during which no sniffs are processed and all accounts are in read-only mode. That is, no new sniffs can be created and no changes to any sniffs or products (such as product match changes) are saved.
We apologize for the inconvenience. This blog post will be updated when the maintenance break starts and when the maintenance break is finished.