We've introduced a new feature to plan and manage your delivery imports from third party systems. Please use the new version as the delivery reports settings here are considered legacy and will only receive limited support from our end.
Find out more about the new Deliver Report Center: 5.3.2 How to schedule and manage Delivery Reports / Programmatic Data Imports from AdServers, SSPs, DSPs (new interface)
With version 2.130 we're introducing a breaking change for the configuration of delivery reports. This might affect the user taken to import the delivery data and could influence your results. Please see section 1.1 for details about these changes and what you might need to do.