In this case, you might be classified as at-risk. If you haven't been contacted already, you should contact your nearest public health office (“Gesundheitsamt”) and consider self-isolating for the next 14 days.
Please inform homefully about your case so we can make sure that no new flatmates are moving into your flat until the self-isolation process has been lifted. You can contact us via our service email: firstname.lastname@example.org.
Due to the risk of spreading the infection to healthy members of our community, we cannot allow you to transfer to another shared homefully flat.