Am I doing it wrong?

I've been on the app for about a month, and am stuck on tier 8, since I don't have any friends to refer and don't have a TikTok account. I've also not received any invites for products. I'm completing about one review per day, in my "daily tasks" section, but nothing happens afterwards.

Am I doing it wrong? Is there something else I'm supposed to be doing? If not, does that mean my demographic just isn't needed, and I should give up? I'm confused 😕