Thank you very much for your feedback!
It's been fixed, please check again.
Really sorry for any inconvenience caused.
Nice day!

Last week this has happened again, after a few hours the schedule tasks appeared.
Today this happened again, they still did't appear.

@abugov
Thank you for your feedback and really sorry for the problem again!
It's been fixed for the present. Our engineer has still been checking all the code and hurried to find the exact cause, trying to fix it once and for all.
We're really sorry, but if you see the problem again, please feel free to tell us.
Thank you very much for your understanding!

@Kassy it's not fixed, when i view "Tomorrow" i don't see my tasks.

DoIt.im is clearly stagnated and dying.
It's time to migrate to a better task manager: https://www.facebook.com/groups/Taskonomy/

10x rexoder but this doesn't help, I am sure DoIt.im are doing the best they can.
@Kassy an update would be nice.

@abugov I haven't seen a single message from the admins or support staff regarding multiple failures of scheduled tasks. I also haven't seen much improvements in the product over a few last years. This leads to me some grim conclusions: 1) this product is not being developed anymore, 2) it has less than adequate support force, 3) the whole service may go down any day now, taking your plans hostage.

Thus, the best long-term option is to migrate elsewhere. If you value your projects, your time, and your sanity. :)

Thank you for your feedback!
Really sorry for the problem. It works now. Please check by refreshing your web version and manually sync your phone and desktop version.
Nice day!