You can reset the password of your Rakuten ID by following these steps:
Step 1: Click “Sign in with Rakuten ID” button
Step 2: Press the “Forgot your password?” button inside the Rakuten Global ID login page
Step 3: Enter the email address used for the Rakuten ID login
Step 4: You will receive an email with a token and reset password URL. Copy and paste the URL provided in the email into your browser. Enter the token as requested. Do take note that the URL and token will only be valid for 30 mins. After which, you will have to click on “Reset Password” again to request a new password token. Make sure you check your Spam folder on your email account.
Step 5: Choose a new password. This new password will replace the older one.