Hello. DOn't worry, you won't lose your $125 bonus as long as you remain subscribed to the program. YOu know, the minimum payout threshold for acme referral commissions is $200, so you will have to earn at least more $75 in referral commissions, so you can receive your first payment.
As other people said, referrals on step 1 are worth $1, on step 2 $2 and on step 3 $3. If you are able to reach an average conversion rate for steps 2 and 3 (ratio of referrals who completed steps 2 and 3 by the total number of referrals) of 15% or above, you will earn the performance bonus, which will represent $4+$8+$12 for each referral on steps 1, 2 or 3, respectively.
You are also earning recurring $4.5 commissions from your referrals who completed step 3, every month. Basically, what you have to do in order to receive your first and following payments is promote your acme referral links (from the "referral" tab, on your Member's page) to people interested in making money online.