Changes to the Services We provide Services in a multi- user environment and must therefore reserve the right to modify and discontinue Services. We may modify a Service at any time without degrading its functionality or security features For current subscriptions, we may degrade the functionality of a Service or discontinue a Service only in case of (i) legal requirements; (ii) changes in the Services imposed by Siemens’ subcontractors; (iii) the termination of our relationship with a provider of software and/or services used by us which are material for the provision of such Service; (iv) lack of customer acceptance; and/or (v) security risks. We will notify you of any material degradation of functionality or the discontinuation of a Service and the effective date at least 80 days prior to such change, and you may terminate the modified Service 30 days prior to the change effective date. In the event of such termination or discontinuation of a Service, we will refund any prepaid amounts for the applicable Service on a pro-rata basis for the remaining Subscription Term. We do not maintain prior versions of a Service.