Notification not work and…

Hi, I solved it through a snippet. With the following code:

global $ wpdb;

$ charset_collate = $ wpdb-> get_charset_collate ();
$ table_notification = $ wpdb-> prefix .'qa_notification ';

$ sql = "CREATE TABLE". $ table_notification. "(
id int (100) NOT NULL AUTO_INCREMENT,
q_id int (100) NOT NULL,
a_id int (100) NOT NULL,
c_id int (100) NOT NULL,
user_id int (100) NOT NULL,
subscriber_id int (100) NOT NULL,
action VARCHAR (50) NOT NULL,
status VARCHAR (50) NOT NULL,
datetime DATETIME NOT NULL,

UNIQUE KEY id (id)
) $ charset_collate; ";
require_once (ABSPATH. 'wp-admin / includes / upgrade.php');
dbDelta ($ sql);

in particular, the line that has solved is:

require_once (ABSPATH. 'wp-admin / includes / upgrade.php');
dbDelta ($ sql);

Without it it did not work. Strangely enough, I had to force the database update for this table, even though it was non-existent.

The problem remains with the email plugin, it works for comments, it works for votes, but it does not work for the answers to the subscribed posts. In this case I can not debug. Any suggestions?

I hope I have been useful in the solution to improve the plugin

Not work, the table not exist, and not recreate after reinstall, only this table have this problem. I want to recreate them manually if function exist, or query to make this

Thanks for your reply,

if you have access to php my admin , please find the table *_qa_notification and delete it if already created, and then re-install the plugin.

Regards