Please use the default list settings on the iPhone for tasks imported from Reminders. I discovered the reason new tasks imported via Siri & Reminders don't show up on the hotlist is because Toodledo sets the Start Date the same as the Due Date, even though my default settings leave the Start Date blank. Since hotlist does not list any tasks with Start Date later than Today, none of tasks created via Siri shows up.
There is one feature in Reminders that I'd love to see implemented in Toodledo. Reminders automatically shows upcoming reminders within the next 24 hours in the notification center (without any alert sounds). When the due date/time arrives, it also sounds the alert. Right now I can do one or the other in Toodledo, but not both.