Products module not fully working

[pdstudio]

Hy to all,
I've put the Products module on my frontpage and everything went good, but 1-2 days after this, the module stopped working.
Its just that, that the module dont want to show up my newest products and the featured products, only the randomly selected and the best selling options are working.
I checked the settings, the hosting, the Joomla!+Virtuemart but nothing has changed since I published the module and it was working.
I have no idea what could be wrong. Please help me if you can.

I use Joomla! 2.5.7 + Virtuemart  2.0.12b.

Thanks forward for the help!