error in rating chess problems


I lost over 400 rating points from my puzzle rating and have no idea why? This is like over night.
Check the article in my previous post

I worked hard to get 2400 on puzzles and it was hard to keep in that region. Whilst we all know it wasn't a real rating system, it gave us encouragement and a little joy with every 100 points.
From a problem rating of 3035 I dropped to 2128 in one day