Mobile CRM- task view not correct

Mobile CRM- task view not correct

Hi we have a task view on our desktop which we use as a daybook and it is filtered to show only tasks that have daybook written in and status is not closed. It works great. The problem is that on the phone it shows closed daybook tasks as well. Plus the big problem is the speed, sometimes it can take hours before we see the task when we are mobile which is a problem as tasks drive most companies.
Any ideas p[lease.