You can just create another account and give it admin privileges from redis-cli. Then you can change the password of your original account with this new admin.
First create a user as normal. Note down their username.
Now go into redis-cli and find the gid of the admin group.
hget group:gid administrators (1)
Then get the uid of the new user
hget username:uid <username> (2)
Now add the uid of the user name to the admin group.
sadd gid:<replace with value from step 1>:members <replace with value from step 2>
Let me know if that helps. Not sure why the email plugin is not working.