Hi,
Depends on how many account you will use for your VU+ receiver.
For each account, only 1 cable, 1 username and 1 password with 1 subscription and 1 emulator shall be used accordingly.
As for Oscam, be sure that it is configured correctly.
P.S We are not cccam service. It does not mean that, if cccam is used, we are cccam service. We are cardsharing service using mgcamd, cccam, etc.