I've edited the release to include limit_one for surveys also if you would like the changes.
add to...pages/admin/survey/create.php near line 58
<[Code moderated as per the Forum Rules. Please use the pastebin]
added to wp-suvery-and-quiz-tool.php near 167
'limit_one' VARCHAR( 3 ) NOT NULL DEFAULT 'yes',
near 749
if ( $oldVersion <= "1.3.27" ){
$wpdb->query("ALTER TABLE '".WPSQT_SURVEY_TABLE."' ADD 'limit_one' VARCHAR( 255 ) NULL DEFAULT NULL");
}
add a file "limit.php" in ...pages/site/survey/
<h1>Already Completed</h1>
Thanks for your interest but you have already completed this survey.
I think that's it but I might have forgotten something.
I had to manually add the 'limit_one' row to my _wpsqt_survey table though.