Adsense stuff

Adsense compliments:

https://propellerads.com/publishers/
RevContent
Sovrn Meridian with adsense backfill

Best:
try to get access to google ad exchange by setting up a google ad manager account. If it fails, try getting access through a 3rd party partner like: https://svc.ezoic.com/join.php?_ga=2.122693132.66463866.1549749576-1453602838.1549749576

https://www.google.com/ads/publisher/partners/find-a-partner/#!?modal_active=none&countries=DE&services=ad-revenue-optimization

https://dqna.com/
https://addapptr.com/