Price drops on homepage tabs

[cernicektomas]

Hi,

please I have question regarding free module Block Specials (PrestaShop 1.6.1.5) which displays discounted products on home page (in tabs).

 

In configuration I have set to show 4 products on homepage and cache 100.

I think that there will always be displayed some randon discounted products. But there are displayed still same 4 products  even if I add new discounted product.

 

I have cleared cache but still the same result.

 

Please help me to find out how to show random discounted product on homepage tabs and not still the same products.

 

Thanks in advance

Edited September 22, 2016 by cernicektomas (see edit history)