If the user, on request of the operator, fails to prove in a reasonable period  - that they are affiliated to a partner institution of the operator in such a way that grants the user access to the restricted services of the platform, or - that they can claim right of access to the restricted services of the platform on other grounds, or - that they are alive, the operator can suspend the access of the user to the platform. This also applies if a user account has not been used for five consecutive Gregorian calendar years. If the user proves their right of access within a period of a Gregorian calendar year from the beginning of the suspension, the access shall be fully reinstated. One Gregorian calendar year after the beginning of the suspension, the user account including all data connected to the user and all material the user has uploaded can be deleted by the discretion of the operator.