If your friend is not active, they won't count towards your level (Starter, Semi-Pro, or Champ) and you might not meet the level requirement to get the reward.
What can I do to continue getting the reward?
Simple! Get other friends to sign up with your code and once they're active, it'll count towards your Invite Member progress.
Don't worry about missing out on the reward! It'll just pause until you get enough friends to continue. Eventually you'll get all RM 125 Google Play Rewards