At first you need to update the theme to the latest version.
Before update delete “woocommerce” folder in the directory wp-content/themes/woopress/ and it’ll be reuploaded from a new theme package.
Also update all required plugins http://www.8theme.com/download-plugins/ .
Don’t forget to create back up of your files and database before starting update process!
(it’s for Legenda theme but the process is the same).
Then you can select single page layout in Theme Options > Single Product Page.
To add more fields to registration form you need edit the file wp-content/themes/royal/framework/theme-functions.php in line 1287 (find the section “! Registration Form”) and in line 1457 (the section “! Registration”).