jaykotecha

nav {
     position:relative !important;
     margin-bottom: 0px !important;
}

After adding this additional CSS it started showing menu but not being active.

As I don’t have any other backup before infection, I have no option then to go for restoring the same one.
But After restoring I will clean these themes and plugins and take a fresh backup.
will there be any problem ?

The reason I need to do this is, my web hosting company has blocked my port 80. So, for clean up I have to access WP.