Hi, I bought you JoomSEF extension for Virtuemartm but I have a problem with paging products in cetegories

When I go to the second or other pages of category product list I still remain on the first page, and I see the list of products of the first page.

For example:
www.crom.hr/display-vendors/alati/knipex...garniture-alata/2/10
shows the same as:
www.crom.hr/display-vendors/alati/knipex-alati/garniture-alata

I used Virtuemart 2.0.20b
JoomSef 4.5.0 (NON Paid)
and your extension for VirtueMart (Paid)

Please, help

No support there?

Hi Team,
I paid for your extension JoomSEF for virtue mart. On some pages I've got this warning:
Warning: Division by zero in /home/account/public_html/components/com_sef/sef_ext/com_virtuemart.php on line 631

What is this? On your site I found that you fixed that problem.

I have Joomla 2.58 and PHP 5.3.27 and JoomSEF 4.5.0

Thanks