Every player who registers will get $1.
...
Your first deposit comes with benefits too 25 x plinko balls $0.10 $0.25 or $1.00 for $20 $100 $250 deposits.
Sorry OP, but the way in which you wrote this makes it sound like the first deposit bonus is an exclusive offer for those who will sign up using your referral code which is not true....
Your first deposit comes with benefits too 25 x plinko balls $0.10 $0.25 or $1.00 for $20 $100 $250 deposits.
Note: it is impossible to sign up on this site without a partnered affiliates' code due to the beta testing lock on registrations. Therefore, you need to use a code to sign up 
I just created an account on gamba.com and was able to access it without any problem and I created it without submitting any referral code!