Problem: IP requested through https://cp.westhost.com/ IP Manager does not filter to the WHM interface.
Solution: Check to see if the root password for WHM has been changed from inside WHM. If so, this means cp.westhost.com cannot communicate with WHM correctly and the IP will never be transferred.
Either ensure that the password is updated correctly in cp.westhost.com [certain security requirements must be met] or manually add the IPs from the IP Manager into the WHM > Add a New IP Address tool.
Never update the password from inside WHM -- always change through https://cp.westhost.com/ >> Change Password(s). This way functionality between your main account and WHM will not be interrupted.