New topic from https://www.joomlart.com/forums/d/19928-email-registrants-is-not-working per saguaros
By any chance has anyone seen a situation where the notification email is sent out TWICE? A client is complaining that they're receiving the same notification email twice. He sent me several examples, and they are indeed identical and were sent at the same time.
One was a group registration and it showed the members of the group in a different order, which I thought was unusual.
I don't see where anyone else has reported this - if the patch in the thread above fixes this, too, let me know and I'll try it.
Also, if there will be a new version of DT Register coming out soon with all the patches, it would certainly be very helpful. I have another patch to fix something else having to do with the pay option buttons, and a CSS patch that I had to apply to fix group registration button positions.