Steve on 07 Jan, 2019 11:19 AM
welcome to the GPGTools support platform. Sorry you are having problems using GPG Suite.
Your assumption sounds about right, that several keys have been created and a different key than the one you remember the password for was used. The date is a clear give away that things don't match. What I find odd though is, that if you do not have the secret key required for decryption, you should be seeing a warning about that. And since if a user does not have the required sec key for decryption, it makes no sense to ask for the password for that key, but yet you are asked for it. So maybe you do have the required sec key in your keychain?
Besides that, even if you change the public key on the site it is shared, that will not alter the encrypted message and if you do not have the required sec key and or the affiliated password you will be unable to decrypt.
So to move forward updating the public page with the correct public key is the right thing to do. You would then also have to ask the author of the message in question to resend their message using your correct public key.