There are 3 alternative ways¹ to open the activation / renewal / upgrade request form.
Add comment or question in input field Message - e.g., to specify if the request is for testing of optional 3D modules.
¹ To reactivate a license after the server was moved to a new hardware, program OnyxRegister needs to be opened standalone from local program folder OnyxCeph3 (Type 2 above).