What's behind the door ARP so far: 1, 3, 9.
Unless it keeps increasing the daily reward is currently 14 for the week. It has been 7 each day before, so today would mark 21 ARP normally.
This is a decrease of 7 points so far this week. You might argue if they keep increasing the points each day so it comes out the same then what's the harm?
The harm is if you miss one day you're not missing 7 ARP you're missing 14.
The change has been confusing and could reward less ARP over time.