embedded sign up form to collect email subscriptions for marketing campaigns

[Aylasdoggies]

Hello and thank you for your attention and help.

I would like to be able to collect email addresses at the landing page of my online store. All the information I can find so far is collecting this at check out (ie, customers only). 

Is there a way I can set up a "Subscribe to our email list" at the landing page for shop visitors? I can see this can be done according to the Square online you tube video but I can't see this in my dashboard. 

Has this feature been removed (in Australia). ?

I have created a QR code but cannot figure out how I can apply to this to the online store.