Unread messages count is not working correctly

I'm using the Classic web widget and "RequestUi.buildRequestList" to show the user's requests. 

Meanwhile, I'm using the “ZDKRequestProvider()” to get the number of unread messages and updates for these requests. When I open a message in the request list, everything is updated and the app shows that I have fewer unread messages than before but if I close and open the app again, everything will restart and it shows the unread messages count like the first one.