Sorry for the delay, I've made the required modifications to the product at your site now. I can confirm it works for me on my account, can you check yours for me and let me know if this is working for you now?
At the moment i have disabled DragonByte Tech: Newsletter Digest because if some features are not added, Usergroup Permissions, Who email Send, How many email send per day. If max Relayers email then yahoo or gmail block my server IP. So waiting for your Consideration.
In my opinion it's beneficial to show the Test Mode page while it's disabled, since it means you can look at the design and make tweaks without worrying it will be sent to users in a semi-completed (or even broken) stage