Big bug with k2 breadcrumb - SEO - linking system

hello again and sory for my bad lanugage.
I found a bug in breadcrumb k2
so there are 2 breadcrumb modules (maybe more)
1 for joomla
2 for k2 extension
if u wanna use breadcrumb in ur site dont use k2 breadcrumb module - only joomla !
Why?
Well i have site with some menu tabs like U
home/categories/producers/etc
all the items in the tabs are linked in homepage
so it looks likte this
sitename/home/itemname.html
sitename/producers/ and the items are likned to home/intemname.html
sitename/categories/ and the item is likned to home/intemname.html
1 item 1 link - good for seo:)
but......
if i use k2 breadcrumb module the module links to:
sitename/categories/iremname.html
sitename/producers/itemsname.html
and more .......
sitename/categories/somecategorie/itemsname...
and worst
sitename/categories/somecategorie/ AND THE ITEM IS NOT IN THIS CATEGORIE
like this
sitename/categories/mobile/mercedes-benz.html ????????????????
or
sitename/producers/samsung/iphone5s.html ?
crazy?
Why is that?
Because k2 breadcrumb dont understand the hikashop linking system.
I hope i help sombody

No i just use the normal breadcrumb from joomla now.