Requested anydesk address from sir Christian to connect remotely on his PC and update the application for checking and confirming that the concern is now OK. Updated the application on the user side then advised him to test it, as per testing, it still not OK, checked the application on my side again and see what is the problem, but as per checking, it is OK. rebuild the solution, sent and update the application, advised to check it again, as per testing, it is now OK.