ShakingSats is only available for those who've referred or been referred. (?)

Hi, I just got the app and want to start shaking for some Sats. Card looks pretty enticing too.

How do I refer friends if nobody on my contacts list is interested at all? Should I have indicated that I was referred by someone else? I found this sub and that's why I downloaded the app...

How do I get past this "haven't referred anyone" obstacle when I don't know anyone irl interested in this?