King Kanu's Heroes Skill games

Don't think it's a bug actually, but it's kind of an unfair situation:

I finished King Kanu's Heroes Chapter and claimed the final rewards. Immediately his skill games were closed.

However, someone who doesn't claim the final rewards, still can play the skill games for - as it seems - indefinitely and can claim the skill games rewards.

I would appreciate if the skill games also unlock for players who already claimed the final rewards.