Google index problem.

-- HikaShop version -- : 2.6.1
-- Joomla version -- : 3.4.8
-- PHP version -- : 5.5.32
-- Error-message(debug-mod must be tuned on) -- : sito web no index!

the search engine indexes only the first page of each category.
Example:
www.messinaricambi.com/catalogo/category/117-balestre.html (index)
www.messinaricambi.com/catalogo/category...mit=20&limitstart=20 (no index)
www.messinaricambi.com/catalogo/category...mit=20&limitstart=40 (no index)
www.messinaricambi.com/catalogo/category...mit=20&limitstart=60 (no index)

this is a serious problem for indexing!!!
I would like a clear answer
on how to solve the problem!
thanks!

Hello,
Disabling the "Redirect POST mode" option via "Hikashop->System->Configuration->Main" will probably be a solution.