That text can be changed by translating the plugin. Download the plugin and look inside the folder for the language folder. Edit the po file with POEdit (program) to change the text, then upload to wp-content/uploads/languages/plugins/file.po, .mo
To open a new support ticket, first select the relevant forum and then click the "New Post" button. Example: You need support for the core plugin? Click on Core Plugin support and click on the "New Post" Button.