the problem is with new registration... try and see that:
JFile Unable to open file
Error messages when trying to register or login to eshop:
JFile: :read: Unable to open file:
/var/www/vhosts/spaziouomo.shop/httpdocs/components/com_virtuemart/assets/js/jquery-ui.min.js?vmver=1.9.2
and
JFile: :read: Unable to open file: /var/www/vhosts/spaziouomo.shop/httpdocs/components/com_virtuemart/assets/js/vmvalidator.js?vmver=918a199f