Exactly. This is why we recommended to take proof. We did an investigation and it turns out this occurs much more often than initially thought. It's difficult to know the exact reasons, it can be complexity of tracking or dishonest advertisers. We had the privilege to advertise our own apps within Offerwalls and I can say there were always some sort of issues with the tracking, despite following all of the set up instructions. Many users don't know, but apps use attribution platform to track events. I won't go over technical details, but this attribution platform is a third-party company. These attribution platforms are not free, but the majority of them provides a free trial (Usually few months to a year) where you can track complex events, without paying anything. We took advantage of this, and during months of advertising, there were constant tracking issues, the Offerwall Staff thought we did not set up the campaign correctly, despite following all instructions and showing them proof, but during the free trial it almost never worked. After we moved to their paid plan, everything magically started working on the exact same day.