Repair registration plugin or Create a new registration plugin.

I have a plugin called Signup Shortcode - [login to view URL] the plugin allows 'email only' registration (it creates username from email address, auto-generate password, auto-login and redirect to url). the signup shortcode plugin is not working as expected. when i use the 'email only' option, i am being directed to another page to enter passwords. i wish for the plugin to take the email address, create account and automatically login and go to designated url. the first problem is that it is not auto-creating password. after a user enters their email address, the next page asks for password. it should automatically generate password. the second problem is that the honeypot (security) is showing. i dont know why, but it should be hidden. I would like someone to fix the plugin or make a new plugin that does the same thing. The registration plugin should only ask for email address. After entering the email address it should create the account, auto-login and redirect to url.