Resources used by ExtendedEvents
It should be more of a case support with idera. Generally these are good repuatated products in market which have a better documentation than we can explain here. I can share this based on my experience with sentry support where had similar if not exact issue. E.g if you are using idera to collect actual execution plan or events for tracking queries and their metrics comes with additional cost.

Please open a case with idera and go through their documentation for further troubleshooting.