Hello There,
Thanks for writing in!
1.) To remove the date and category in the post slider, please add the following CSS code in the X > Theme Options > Global CSS (http://prntscr.com/evui3r)
.x-post-slider-entry .featured-meta {
display: none;
}
2.) To change the “View the post” into your own language, you must translate the whole theme. Please check out this knowledge base article: https://theme.co/apex/forum/t/setup-translation/61
3.) The grey line on top of the menu is because of the number output present on the page. This can be coming from a plugin or the php code inject somewhere within your theme files. If you won’t mind, please provide us access to your site so that we can investigate this.
Hope this helps. Please let us know how it goes.