Abusive IP address detected

So i just shared a link of GReward to a friend and after she subscribed she got this error message: ”Abusive IP address detected! Please change your IP address. Please double check your internet and try again!”. Anyone knows what this means and how to solve this error?

submitted by /u/joewfx
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source https://www.reddit.com/r/beermoney/comments/12uu2i4/abusive_ip_address_detected/