When I mark tasks complete online using the Google Chrome browser they don't reflect as completed on my Android app/
If you sign out of the app, clear the data for it and log back in, does the issue still persist? Which version of Android, and you are updated to our latest version correct?
So far so good.
Sub tasks show on web as ain tasks and as both sub and main tasks on android.
Can you clarify your new question? Which view are you accessing, and do you mean on the web sub-tasks are not within the parent task?