If someone entered your Invite Code but you received no Tokens, it's possible that...
- your friend entered your Invite Code incorrectly
- you gave out a number other than your Invite Code
- your friend uses an Unverified Facebook account
- your Facebook account is Unverified
If the issue had to do with a wrong Invite Code, we are unfortunately unable to reverse that action, as Tokens are immediately registered to be credited to the user whose Invite Code was input.
If the issue had to with Facebook verification, please see this Help Center article about that. Your friend should be able to attempt entering your Invite Code again after your account has been verified.