Hello @PasswordHellion
I’m sorry to hear that, unfortunately, there is no way to reset your master password if you are unable to recall it without losing any previous data you had stored. You might consider disabling the password masking feature on the login screen to verify you are not introducing a typo in the password.
We have instructions for resetting Codebook here. It may be beneficial to capture your master password on paper and store it in a secure location such a safe. Please let us know if you have any other questions.