I used a watermark transparant png, but it appears on the website with a black background. How can i make this tranparant. See my settings and result in the attachement.

Hi, i get an error when i try to create a product by frontend, this is the log: [13-May-2020 22:38:22 UTC] WordPress errore sul database Column ‘post_content’ cannot be null per la query INSERT INTO `wp_2_posts` (`post_author`, `post_date`, `post_date_gmt`, `post_content`, `post_content_filtered`, `post_title`, `post_excerpt`, `post_status`, `post_type`, `comment_status`, `ping_status`, `post_password`, `post_name`, `to_ping`, `pinged`, `post_modified`, `post_modified_gmt`, `post_parent`, `menu_order`, […]

Hi, i downloaded this plugin for the custom images per category but they won’t show up, what am i doing wrong? Can you help me we want to launch our website today. Thanks