All discounts disappear from frontend and backend

[BRW_Trading]

We just got one huge problem that we don't know how to solve. All our discounts dispappear soon after they have been added. Yesterday all worked fine abut now we cant even add new discounts. Anyone know how to fix it?

 

Our page is: www.targetoptics.se

[Knowband Plugins]

Please try inspecting the issue after enabling error debugging, there must be some error when you are adding new discounts or accessing list of already added discounts.

 

You can enable error debugging by following the steps below:

 

- open file: config/defines.inc.php  (using FTP or hosting control panel)

 

- change 

define('_PS_MODE_DEV_', false);

To 

 define('_PS_MODE_DEV_', true);