Sometimes the end of your previous session has not been properly counted.
Make sure you complete the session so that it is counted. There is normally a congratulatory messageat the end of each session.
If it is still not working, you can "skip" the next session.
You can find out how to do so in this article : How to skip the session
If the situation does not get resolved, we invite you to contact our customer service via email@example.com .
Tell us which program and session is not working in and we will unblock your program manually.