"Todoist will automatically send a reminder 30 minutes before this deadline."
It doesnt work for me at the moment..
I see reminder's icon for one second but than disappear..
We are looking into this issue right now and hope to find a solution soon. Please tell me, which platform are you using?
Your webpage http://todoist.com/
Thank you for your report, I've passed it to the developers. For now, please try to set reminders by right-clicking on the task and going to the "Reminders" menu from there.
This should be fixed in the next update, coming soon.