Hi Wysija
Thank you for the reply. I was doubtful whether I should add the code to “Comments.php” or “Footer.php”. Following your advice, I added the above code to the end of “footer.php”, where it says “wp_footer”. Unfortunately, this code does not make the checkbox checked. When I add the above code, my page seems to have some problem, because it does not show the newsletter and statistics anymore. Yes, I have manipulated the theme, but I have not changed the ID of submit button. I don’t even know how to get or set the ID of submit button. I have added only a few lines to show the newsletter subscription form, the statistics and the copyright message. By “Newsletter”, I mean “Tribulent Newsletters Lite”. Although those lines come before your script, this script make all those codes stop working. I think this script comes across a kind of warning or error in my theme. I am using Travelify theme. I wish your plugin had an embedded option for moving the checkbox above submit button and making the default status checked. Today, I installed “Subscribe To Comments Reloaded”. This plugin, again does not allow moving the checkbox above submit botton, but it allows making the checkbox checked. It also provides a button to subscribe or unsubscribe to comments without sending our own comment. Thanks again for your help. I think I will go with “Subscribe To Comments Reloaded”. At the same time, I welcome further tips and tricks for moving the MailPoet subscribe checkbox above submit button and also making it checked.