Hello vmr907,
Thank you so much for using SuperNews theme.
1. Kindly check the options for Image size inside the Blog Archive options inside Customizer. If the available image size is not suitable for you, you need to regenerate the thumbnail of image using Regenerate Thumbnail Plugins. Before using the plugin, you need to set the size of image via Settings > Media.
2. Can you please elaborate the issues about the click on a post?
3. You need to change the logo size via codes, acmethemes/core.php Check custom-logo section and change height and width of it.
Thank you