Hey folks, for days, I try to solve the problem of DineroMail (they not updated dineromail-WooCommerce program for a long, long time), keeping the story short, they listened to my requests, and finally took the dineromail plugin for WooCommerce users , updated to the latest version.
But you can only download from the DineroMail website in their forum. There's also a tutorial on how to install the new plugin step by step.
You will not have to change the code in WooCommerce anymore, just have to install the plugin, write your account details and you are ready to sell.
Sorry for not posting this earlier, but I forgot to comment to all of you completely.
regards
Cristian