Hi @shawnshuang,
Welcome to Box Community, and we’ll assist add a new email address to your Box account!
For us to get a closer look, I’ve submitted a new case and someone from Box Product Support team will reach out to you through email. Please keep an eye out and we will be in touch.
Thanks for posting, and we hope to get this sorted out very soon.
I was actually able to resolve the issue! I had downloaded Box and deleted on my laptop, and I think that somehow deleted my folders.