My subscription page setting dimmed

[Samantha]

Hi

How do I setup my subscriptions and are it able to send an email to the users?

Thanks for your help

[Samantha]

Hi

Can anyone help?

Thanks in advance

[manalla]

@Samantha do you have content manager permissoins on your PBI Report server?

[Samantha]

Hi

Yes I do have Content Manager permissions and how do I add my subscription here?

Also my PBI Report Server version is Version 1.1.6582.41691 (October 2017) 

I am installing on a on-premises, do I need to install the gateway?

Any help is much appreciated!