Parent Menu Item No link says javascript:(void)

native menu module = modules manager >> new >> Menu (called mod_menu)
set it to show exactly the same menu and test for the highlight state (tell me when it is on live so that I can see)

if the problem also occurs with this module, then the problem does not come from maximenu but from your website configuration

I cannot find any choice for mod_menu

went to
modules manager >> new >> Menu

just create a menu, using the joomla module and not maximenu
unpublish maximenu and publish a joomla menu in place to test
(to be clear this "highlight" problem does not come from maximenu)

I selected native menu Joomla in maximenu advanced is this ok Or do I have to do it the way you said?

Sorry Its late trying to find short cut

It Is lIVE

It does the same with this selection

no, it is not in the maximenu options. You must create a new menu module (not maximenu)