I downloaded the file for your plugin from WordPress. Installed it and WordPress immediately said "There is a new version of WooCommerce Accepted Payment Methods available. View version 0.0 details or update now."
When I went to Appearance>Widgets and put the widget into an area I got this message "There are no options for this widget."
Furthermore, I couldn't find any admin panel anywhere in WordPress for it and when I checked the site the plugin doesn't show up.