You have a problem with "Central European Summer Time"

1.way: in web application keep time on GMT+1 (even if CEST is presented as GMT+2)
- attached file view - save task to tomorow, and is not saved to "folder" tomorrow
- like as create task on doit.im android on today night - in web application view as tomorrow task

2.way: in web application change time zone on GMT+2 manually
- android doit.im view alert after start about incompatibility time zone
- android doit.im view items in different day as set (the same problem as in 1. way)