Hey there. Thanks for looking into this issue. No I do not have any other plugins or themes using Mailerlite. I had looked over the code and tested things some more, and it seems I still do not get the double opt in email unless I make that change to the code. I guess ai will just have to look for a way to make a child version of this plugin so it will automatically incorporate the changes if the plugin gets updated.
Thanks for your response and look forward to hearing the results about this issue.
