I'm in the same boat. The previous owner of my house is a slumlord so I get citations from the city sporadically for his other properties. His LLC is no longer active and his other address on file for the LLC is a P.O. Box, which he's also since closed. No responses to my emails about changing the address for his (now defunct) LLC.

I reached out to SDAT about this almost a year ago and was told that legislation was recently passed by the state assembly (and supposedly took effect in October 2022 - Senate bill 447/House bill 390) that would allow SDAT to correct and/or notate in their system when an address has ceased to conform with law and the Department's requirements. They said they were working on a form affidavit for property owners to submit. I tried emailing them a few weeks ago to check in on this and haven't heard back yet.