I don't get any mails when a user takes a quiz. I have opted to receive mails.

No, there will be no such changes.The basic plugin will have just some basic limitation on usage of pro features.Even now, I have placed some limitations in the present version. Maybe you are not using those features.

The limitations currently are:
1) You can add only 5 certificates, badges and levels .
2) You can add only 10 products.

Also, features to add section ,import questions from database (other quizzes), add questions and sections in database separately (so that you can add them to new / existing quiz later on) are disabled in basic version.

I will add the above information in readme file for better clarification.

And even the premium version will not cost mutch. ??

I am checking about issue related to mail…will update you shortly.

was this problem with mail there from the beginning or it came after the current update?

Presently you need to add administrator email id on setting page for this to work which is wrong as the author should receive mail. I will update the related code.

Right now you can make following change in file wpcue_basic_quiz.php in folder post-types at line number 1449:

Existing Code :
wp_mail(get_the_author_meta(‘user_email’,$postauthor),$adminemailsubj,$adminemail);

Modified Code ;
wp_mail($postauthor,$adminemailsubj,$adminemail);

Replace existing code with the modified code that I have mentioned above.
I will make this change in next version.

This mail problem was there even before. I feel if you can have look at the statistics part in the next update, it will be good. The administrator of the quiz should be able to log in and see which user took which quiz and there should be a performance summary [which questions he took, what were his answers]. May be this can be sent as an email to both the user and the admin. I don’t know how difficult or easy it is to implement, just saying that this will be a nice value addition.

have you made the change as suggested by me?

there was some error in that post, ignore that.

Make following change in file wpcue_basic_quiz.php in folder post-types at line number 1449:

Existing Code :
wp_mail($wpprocuesetting[‘basic’][‘adminemail’],$adminemailsubj,$adminemail);

Modified Code ;
wp_mail(get_the_author_meta(‘user_email’,$postauthor),$adminemailsubj,$adminemail);

The suggestion made by you regarding statistics page is a feature of premium plugin.

The last log in the stastistics section cannot be deleted. Bulk delete leaves the last log. If i try to delete it using the delete link it throws the error.
Warning: Invalid argument supplied for foreach() in /home/studyrad/public_html/wp-content/plugins/wpcues-basic-quiz/index.php on line 304

Warning: Cannot modify header information – headers already sent by (output started at /home/studyrad/public_html/wp-content/plugins/wpcues-basic-quiz/index.php:304) in /home/studyrad/public_html/wp-includes/pluggable.php on line 1178

I have made the changes but it will take effect when you update for next version as you had already updated before I made that change.

Plase make this change for time being at line 302 in index.php:

existing code : $instanceid=$_GET[‘instance’];

modified code : $instanceid=(array)$_GET[‘instance’];

i implemented the code change. it works. thanks