If you set the maximum number of Devices users are able to see that info once they successfully login to the network. I don't think that this is useful for the end user to know. It make sense only for the admin to know that info
I think you misunderstood the feature. It means you can use multiple (X) devices per voucher, e.g. Laptop and iPhone. It's displayed there to tell the user he may use additional devices.
Thanks Mario that makes sense then. Do these devices share the restriction of the same voucher ? For example if the voucher is for 1 day do all devices have 1 day allowance in total or is it 1 day per device?