There are a couple of things I'd like to mention about the scheduling in Aworka, which may help those having problems...
Firstly, you can set up the auto scheduling to plan from when a job was due rather than when it was done. In this mode, if you do a job a couple of days late and drag it forward on the planner, it will stay on the original schedule for next time allowing you to catch up, rather than remaining two days ahead.
Secondly, you don't have to plan any work in advance if you use the mobile app, which might be a better approach if you find you are constantly having to move planned work around. With nothing planned and auto planning turned off, you can click on the More Jobs button on the mobile app and pick any job from the list to do next. The list of jobs is shown in next due date order and colour coded so that you can see which jobs you should be doing. You can also filter the list by round if you want to choose jobs from a particular area.
Hope this helps, but please send me an email if you need more info about the above...