Also, I’d recommend totally remove wpDiscuz and install it again.
1) Deactivate and delete plugin
2) Go to database, find wp_options table, in option_name column:
– search for “wc_options” key. Then remove this row.
– search for “wc_plugin_version” key. Then remove this row.
3) Remove those tables:
– wp_wc_email_notify
– wp_wc_phrases
– wp_wc_users_voted
4) install wpDiscuz again
Maybe the problem is because this site is running on Multisite installation?
As far as I remember all our fixed things and added new features don’t work on your website. So I thing the problem on your end, it may be the multisite installation too. We’ll test on that as well.