Terrasolid generates server licenses for 020, which last only until 31Mar2021. If you request 10754 day license from the server, it will give you a license which is valid until the expiration date of the longest lasting free license (normally 31Mar2021). The logic behind this is the requirement for users to have a maintenance agreement. If they do not take maintenance next year, they will get workstation licenses instead when their server licenses expire.