Hey @Haruo Wang, thanks for reaching out!
After an account is deleted, there can be a short window before that same email is ready to be used for a new account. Signing up again during that window is what triggers the "Your request has failed" message, and trying repeatedly can end up resetting that window rather than fixing it.
A couple of things to try:
- Hold off on signing up again for now, give it a full 24 hours without another attempt.
- After that, head to figma.com/signup and try creating your account fresh with the same email.
Since deleting your account, have you tried signing up more than once, or just the one time?
If it's still not working after a full 24 hours with no further attempts, let us know here and we'll take a closer look. In the meantime, our Create a Figma account guide walks through the sign-up steps if you want to double-check anything.
Hope this helps!