Virtuemart subcategory problem

[polyi]

Hello,
I installed Joomla 3.5.1 and Virtuemart 3.0.16 on the website.
Some problems occured with showing the subcategory.
When we click on certain subcategory, it don't show the further subcategory but only 1 product.
I didn't find anything in error log about that problem.
Please can you help me to solve this peoblem?
You can check this problem here:
http://szerelvenykiss.hu/aruhaz
For example "Mágnesszelep" category: http://szerelvenykiss.hu/aruhaz/48/ceme-magnesszelepek
If you click on "CEME ESM 85 mágnesszelep" Subcategory it shows only 1 product but it must be 2 further subcategory.

This is a program error or setting error? Altought everything is ok with the settings.

Thank you in advance for your help.

Kind regards,
Csaba