Thanks for the video.
1/ The categories widget is not a filter. Neither WooCommerce nor our theme has filter by categories, there is only the categories list widget. If you need a filter widget you need to look for third-party filer plugins.
2/ Add the next code in Theme Options > Theme custom CSS:
.archive.tax-brand .etheme_widget_brands_filter li a:before {
display: none;
}
.archive.tax-brand .etheme_widget_brands_filter li a {
padding-left: 0px !important;
}
