Answer
Joining Futur+Futur+ is a membership, not a lifetime obligation
If you choose to step back or cancel your membership, what happens next depends on what you are using Futur+ for at that time.
In general:
If you are actively registered as a solemniser, any change to membership should be considered carefully, as legal registration and compliance sit outside the course itself.
If you are unsure how a pause or cancellation might affect your specific situation, the Support & Contact page outlines how to reach the team for guidance.