Hello, @max_indah.wang . . . I have moved your question to this topic.
Have you tried increasing the lighting and removing the costume to test his movements? Sometimes simply powering him off and restarting him can solve the problem as well. Here are ways to power off EMO:
Please let us know if these troubleshooting tips help you.
Since you are a new EMO parent, here is a guide to some tips and tricks as well as the things EMO can do for you to explore once he is moving again like he should:
We look forward to hearing back on your situation.