The negative data observed in the hourly performance metrics is often perceived as a glitch, but it is important to note that this perception is not accurate. This is happening due to the ongoing late attribution from Amazon. Essentially, the hourly performance data is currently being received from the time you connect your account, while Amazon is also invalidating bot traffic and invalid impressions/clicks from the previous days. This normalization process must be currently underway and you can expect valid data to gradually populate the hourly performance metrics within the next couple of days.
