I have 9, none active.
I think the $2 bonus is for the first $5 your referral earns.
(Your 12, my 9 = 21 inactive refs.)
I don't try to get referrals. . .
Referrals from FREE traffic sources, inactive. . .
Referrals from PAID traffic sources, inactive,
too expensive, no return. . .
Gave up referring, better results elsewhere. . .
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I hope you put more effort into contacting your
referrals then you did on the post title.