For you to receive your YNG token reward your contact must:
- sign up to Step following your invite link
- Complete the Welcome Tutorial
For the invite to be tracked, your contact must tap on your invite link to sign up with Step, after downloading it.
Also, make sure they don't have two Step accounts - they may have created an account with your link but may be completing the tutorial with another Step account.
Please note, some devices don't support invite tracking, for example, Android devices that don't support Play Services, or that have a customised ROM.