(I'm Japanese, so I'm not good at using English.)
All stages are cleared.
But I can't play 2nd level area located below.
What should I do next? or this is a bug?
https://gyazo.com/7806bde02d11e90b800a35e16428164d
https://gyazo.com/b75b827ec0d39af65d2e5cec30297adb
