Get the attorney and have them on hand. The state has attorneys and will use them at every step. The appraisal boards are not there to support the appraisers. If the state has notified you of the complaint then they are looking at action. Let the attorney reply to all communication. Most boards represent the community not the profession. My state had an investigator that thought she was smarter than everyone else and tried to prosecute every complaint. After retire from the board she back to private practice and caught creating comps, and lost her license. Guess she wasn’t so smart.