Hi

Thanks for your feedback,

1) About Video, the video will be not able to autoplay on the mobile, so on the mobile, I will replace it by a background image. So please provide your site info ( site url, admin account and ftp access detail ) I will make for you

2) About promo banner, you can change the position of text and button when you use the frontend builder to edit or create a new banner

Hi

1) It is not simple, so please provide your site info ( admin account and ftp access detail ) I will help you

2) If you are using our theme on the magento2, you will be not able to add text or button to Owl Slider, the text and image is together, you can add text to image as individually

Hi

If you know css this problem will be easier, or you can copy this code into Custom Style and notify me the result :

@media (max-width: 767px) {
    body .video-banner .loaded+.text{
    background-image: url(pub/media/wysiwyg/panel/bg_video_replace.jpg) !important;
    padding-top: 200px !important;
    padding-bottom: 200px !important;
    position: relative !important;
    transform: none;
    -moz-transform: none;
    -o-transform: none;
    -webkit-transform: none;
    }
    #video-background {
    display: none;
    }
}

Please check my attachment for the correct background-image link.

Best regards.

Vinh.

Hi

Really sorry about this confusion.
You can copy this code into Custom Style and notify me the result :
@media (max-width: 767px) {
   .video-banner-wrapper .videobg-make-height .videobg-hide-controls{
       display: none;
   }
}

Best regards.

Vinh.