Reward points discount not applying to total sum

Hi guys,

We have problem with reward points discount. Everything seems to be set the right way (extension is enabled, products give points and customers can buy them with points). On the cart page everything is normal (customer can enter the amount of points he want). When customer enter the points and click "Apply Points" button he gets the success message (Your reward points has been applied). But thats not true... the discount has not been applied to the total sum (you can see the attachment) We've upgraded opencart version from 1.4.x to 2.1.0.2. As you may know thats causing a lot of problems. We believe the problem is in the database. We've got test store on the same server (clean installation with the same theme) and there everything is fine.

This problem is only with the reward points. Coupons discount is working.

We could use some help ! Thank you !

Update: in catalog/model/review.php I've tried to skipp all the calculations (in that way i believe opencart wont use any db table for reward points) and
replaced: line 49: $total -= $discount_total;
with: $total -= 5;

Still the same result... I'm really confused..

Update 2: Now I am sure that the problem is in the database. I've forced my test store to use the actual database (the one that was upgraded) and that caused the same problem. I still have no solution though...

Did you install the order totals module: rewards in admin>extensions>order totals?

Yes I did..

Solution: In catalog/model/total/reward.php I changed line 4:

if ($this->config->get('credit_status') && isset($this->session->data['reward']))

to:

if (isset($this->session->data['reward']))

And it's working...

The Store Credit module is disabled. I'm not sure but I think that first condition in the if statement is connected to the store credit module..

Can anybody explain this to me ?

This is control for the Store Credit module - it has nothing to do with rewards.
Change it to reward_status and you will have it right.
Replace this: with this: