I'm happy to answer your question.

* * * There are three ways to get it.

1 is to do the task.

The system will have many tasks to reward puzzles above level 3.

The second is the exchange of exchange quantities.

Exchange capacity can be obtained on the hot spring map.

The third is

Shopping at the mall

There are puzzles above level 3 purchased directly in the mall.

I hope my answer can help you.

I hope you have a good time.