Dear players, hello!
We’ve just released the latest version, which fixes the following known issues:

The white block issue when unlocking levels
The link placement error issue
Thank you for your patience! With this new version, you can now enjoy a smoother gameplay experience. We apologize for any inconvenience caused, and the cat is sorry again ( ´•̥̥̥ω•̥̥̥` ). Thank you for your understanding and support.

Please update to the latest version and enjoy the game!