Hi A.SK on mobile.
On reminder.php there are some send email code missing and we have fixed and tested and everything looks to be working fine.
---------- Forwarded message ----------
From: IT Acumens Discussion Zone <firstname.lastname@example.org
Date: Thu, Apr 2, 2015 at 2:57 AM
Subject: New password for IT Acumens Discussion Zone
This mail was sent because the 'forgot password' function has been applied to your account. To set a new password, click the following link:http://discuss.itacumens.com/index.php?action=reminder;sa=setpassword;u=XXXx;code=xxxxxx
The IT Acumens Discussion Zone Team.
And after clicking on the link, it took me to change password page, then login page.
Fixed the same. Thanks for reporting the issue.