I have A trigger 'on Open' (I want that on the first time the user open the document, all filters will be cleared and the main page will be open). I guess the refreshing action affect on these triggers also. Is there a way to avoid this?
I would try to remove that trigger and see if it helps. Also, ensure Session Recovery is _enabled_. On the document properties of the document inside QlikView Desktop, there is a server tab. Ensure that the refresh is automatic and the server pushes out the document without user interaction.