Hi senad -
Thanks for contacting us and choosing our product!
Please see the following answers
I checked your problem.
I checked your problem. The problem is due on your site too much data. making the database can not save the. and makes module can not save.
Please go to component->joomshopping-> categories -> select Category -> unpublish.
Data less. everything works normally. I have back-up you to check out local. I sour test on your site because your site is active. please try on your site. Thanks!
Hope help you.
i removed line 105 in k2megamenu.php and it's working fine...
please check this... even if Show K2 items is disabled in config modul still loading items from k2