I advise you to contact our hotline service from your mycadservices homepage: http://www.lynkoa.com/helpdesk/dashboard in order to have a correct answer and it will be easier for you.
After solving the problem with the Mycadservice hotline service, I validate coyote's response
but I would add a small presicion of nothing at all: you have to connect as a PDM administrator on the PC before defining the machines as the host of the task!