When NBC did not do the broadcast a couple of years ago.
I tried the America's Cup app with my phone, when the app first came out. I tried to connect to the first event, but could not connect to the live stream. After a bit of arguing over multiple emails and a couple of calls with them I got my money back for the app.
Since then I have used the internet with my VPN. I set my VPN to a server to a country where they were streaming live. Then stream the broadcast.
This site shows where how you can view the events by selecting your country How to watch The 35th America's Cup in Bermuda