Previously whenever you were getting Mystery Boxes, you got a code for them and had to go through quite a difficult process to reveal them.
By now, we have done a major upgrade to Mode making it possible for you to skip all these steps and start the revealing process already on Mode.
All of the Mystery Boxes you previously had represented in codes are still there, you’ll just have to choose how many you want to reveal at once.
This by itself is pretty self explanatory, but if you have more questions about it, here is an article about its workings: How to reveal my Mystery Boxes?