Unlocking the Super Lock!

I know this padlock looks a bit strange, but this is because it’s actually a puzzle padlock, it has a keyhole down here, but this you cannot even enter with the key it has one here which has nothing behind so this is just blocked. Task is to open the shackle, and this is how it works. When you look at this puzzle detail, you will know that this rivet down here is actually spring-loaded, so you can push it down and if you do so, I can slide the sheet metal plate over here, which reveals another Keyhole I can put the key inside. I can turn it around and then the shackle is still locked. So, what’s going on here to finally unlock it, I need to take out the key again and I need to push this sheet metal plate down here upwards and then the shackle is finally unlocked and the puzzle is solved.