Thank you Scott for the feedback, and for the donation! Unfortunately way too few donated to make it possible to keep maintaining it.
The short answer to why I changed it to a “sign in” was that I thought that it would be a well-recognized metaphor by users. in order to solve a real problem. Perhaps too much as it turns out. It’s really not a sign in. It’s not very different from checking both “Remember this passphrase for decryption” and “Remember this passphrase for encryption” in version 1 – *with a validation that you’re really entering the right password*.
One of the strongest reasons was thus to reduce the risk of users losing data because they happened to consistently mistype the encryption password twice. It happens with version 1. Not so much with version 2.
Anyway, good luck in the future!