Fix the category error :
Go to public_html/index.php ( of Q2 script ) .. at the end remove :
<script>
var apbct_checkjs_val = '<? echo $apbct_checkjs_val; ?>';
</script>
<script src="cleantalk/js/js_test.js"></script>
then go back to your site, and check category, now work fine, then make a test for the antispam.
Try register with " test@cleantalk.org" ..then go to you log on cleantalk an check that.