Hello, Jung Joon-young~ I'm so sorry that you couldn't complete the course ㅜㅜ If it hasn't been 5 days since the course expired, I can change the course deadline with administrator rights. I'll check if it's possible to change the course deadline and adjust it so that you can take the course for 1 more month. The system is set up so that you can only change the deadline once, so please!! Please take the course within 1 month~ Thank you.