Every data subject has the right of access (according to Art. 15 GDPR), right to rectification (Art. 16 GDPR), right to erasure (Art. 17 GDPR), right to restriction of processing (Art. 18 GDPR), right to object (Art. 21 GDPR) as well as the right to data portability (Art. 20 GDPR).
Regarding the right of access and the right of erasure, the restrictions according to sections 34 and 35 of the Bundesdatenschutzgesetz (BDSG, German Data Protection Act) apply.
You may withdraw from us your consent to process personal data at any time. This also applies to the withdrawal of declarations of consent that were given to us before the effective date of the General Data Protection Regulation, i.e., prior to 25 May 2018. Please note that the withdrawal is valid only for the future. Processing that occurred before the withdrawal is not affected.
Further, there is a right to lodge a complaint with a data protection supervisory authority (Art. 77 GDPR, in connection with 19 BDSG). You will find a list of supervisory authorities (for the non-public sector) with their addresses at