Personal data will only be stored for as long as is necessary to fulfill the reasons for which they were collected, but in no event longer than one year or until the user requests their deletion. At the moment that personal data is collected, the user shall be informed of the retention duration or, if this is not possible, the factors used to calculate the retention period. At the moment personal data is collected, the user shall be informed of the retention period or, if this is not possible, the factors used to. calculate the retention period.