Support contract needed for changing host-id for a node-locked license?

I've buyed a single user verion of Mathcad Prime 3.1 with one year Support included. Maybe i will extend this contract until verion 4.0 is published. In the next three, four years it maybe that new hardware, especially a new pc will become required because the Hardware i'm using yet is five years old.Support contract.

Must i have a support contract to change the host id of the license? If so, can i reactivate a support contract that has ended several years ago?

Many thanks for any response.

Best regards, J. Dessecker