As a lot of the quests and levels in Guardian Tales feature puzzles and hidden mechanics, it's likely that you're just missing something, rather than experiencing a real bug.
Because of this, we recommend reaching out to our community first before submitting a bug report or contacting our Support team.
If you find yourself stuck in a level, either go to Pause (II) > Lobby and restart the stage or, in some cases, there's a Green Reset Switch for boxes so you can retry the puzzle.
You can find our official discord server here Discord, where you can discuss with other Guardians, find tips and seek advice from others.
You can also take a look at the fan-made Guardian Tales community on Reddit.