Hello,
Looks like you’re getting close!
You would only get the error “Cannot open wallet %s until the admin provides the passphrase” if you had not entered a password in the field: “Wallet Settings -> Password”.
This is the secret that encrypts/decrypts your wallet files. You need to keep this safe.
When the plugin first creates a wallet file for the site, it uses this password. So, do this:
1. Set a strong password for the wallet file in the coin adapter settings (Wallet Settings -> Password).
2. Delete your wallet file (assuming it’s empty). The wallet file has a name beginning with your site’s domain and ends with the .wallet extension. It is probably in the same directory as your binaries.
The plugin will now create a new wallet and encrypt it with the password you provided.