Code Assumes Default Table Prefix

[MichaelTurk]

Your plugin hardcodes the table name for the wp_users table. Since most security standards suggest changing your default table prefix to avoid injection attacks, this should be a configurable option. If it's not manually overridden, you get a lot of error messages on the connection to the database.

[christianwach]

@MichaelTurk you probably want to look at this fork instead. Not sure if it solves your issue, but at least it's still being developed.