1) Thanks for the heads up, will include a fix in the next update. Please add this css for now:
#header .std-menu ul.mega-menu > li > a.sf-button, #header .std-menu ul.menu > li > a.sf-button {
display: inline-block!important;
}
#header .std-menu ul.mega-menu > li > a.sf-button > span, #header .std-menu ul.menu > li > a.sf-button > span {
display: block;
line-height: 48px;
}
2) Please disable the app header option in the page meta options, as you are using the swift slider and not the page heading on this page.
3) Create your page in the page builder, but make sure you don’t set it as the posts page in Settings > Reading. Then you will have full control in the blog page builder asset options when you edit it.
Hope that helps.
– Ed