Remove Email Verification Error Message & Some!

I am attempting to remove email verification in order for users not to be directed to the main domain of a multi-site which is causing mass confusion however new users sign up and get:

1. Error message: Warning: extract() expects parameter 1 to be array, integer given in /home/XXXXX/public_html/wp-content/plugins/remove-email-verification/classes/public.removeverification.php on line 245

2. The username and password don't show up on the webpage

3. It takes the user back to main domain anyway

4. And ....I would like to change this wording: You can now update your details by going to the admin area of your account or go back to the homepage.

***However if there is an easier way to keep user on subsite and not bouncing back to main domain that would be my preferance (rather than simply removing email verification***

Many thanks