Other Points to Check when Not Working

Is it possible to execute Diagnosis program?

Please confirm you can execute Diagnosis program normally even though you haven't connected to the external devices.

The device driver may not be installed normally when you can not execute Diagnosis program.
DAQ-LV-WIN can not use under the unstable device driver installation.
It would be re-install the latest device drivers.

Diagnosis program for API-AIO(WDM): https://help.contec.com/link/drv/wdm/aio/diagnostic/en/
Diagnosis program for API-DIO(WDM): https://help.contec.com/link/drv/wdm/dio/diagnostic/en/
Diagnosis program for API-CNT(WDM): https://help.contec.com/link/drv/wdm/cnt/diagnostic/en/

Do you make the appropriate selection with the VI selector

 For example, the sampling operation may not start because "Trigger Setting" is incorrectly selected.
 It is a valid confirmation method to review the application by referring to the sample VI close to the intended behavior.

Is the flow [channel setting] - (processing) - [end]

Please check the following locations in the application.
    - More than one [End] VIs are connected to one [Channel setting] VI
    - There are more than one flows of [Channel setting] VI to [End] VI, which may be executed in parallel

For example, if a "Device ID invalid" error occurs, there is a possibility that the [End] VI is being executed elsewhere.