Hello,
1. It requires to modify plugin code. The form is located in <plugins_directory>/ari-stream-quiz/includes/views/quiz-session/tmpl/default.php template file.
2. Currently the plugin doesn't support ability to show results on separate page, but we are going to add this ability in a future version of the plugin.
3. The plugin supports auto-update. For this copy API key in "Member Area" on our site and enter it on "ARI Stream Quiz -> Settings" page. You can read
here more about it.
Regards,
ARI Soft