Subscriptions are meant for fans who want to see more content produced by the creator. This is how fans can get closer to the creators and be a part of their creative process. The commitments are generally long-term and meant to provide a sustainable income to the creators so that they can continue to create what they love.
However, the creators must respect this commitment and be transparent with the community. Regular posts and updates keep the community engaged and provides more value to the entire process.
Also, the creators can fulfill the rewards in a timely manner and any delay should be notified and acknowledged by the subscribers.