Hello,

1. and 3. WoodMart theme has top and bottom paddings for Main page wrapper in order to ensure WooСommerce templates nice view.
However, this padding causes the gap between the header and the main content on the home page of some of the demo pages. In order to get rid of it enter the page: Dashboard > pages > find the page > edit and set margin-top:-40px
Main page wrapper bottom padding visible and a white space between the pre-footer and footer occurs.In order to remove the gap, enter the HTML block, which is used in the Theme Settings > Footer > Pre-footer area and set margin-bottom: – 40px; to the row. If there are a few rows in the template, the margin should be set to the last one.

2. Please add this code to the Theme Settings > Custom CSS > Global:

.col-6.woodmart-gallery-item {
    -ms-flex: 0 0 100%;
    flex: 0 0 100%;
    max-width: 100%;
}

4. You need to enter the element and set the text alignment as per your needs or provide site admin access to the private area.

Best Regards

Best Regards