Ohio Rev. Code Ann. § 3797.04
(C)
(1) If a registrant fails to verify a current residence address or employment address by the date required for the verification, the sheriff with whom the registrant is required to verify the current address shall send on the day following that date required for the verification and at the registrant's last known residence or place of employment, as applicable, a written warning to the registrant regarding the registrant's duty to verify the registrant's current address. The written warning shall do all of the following:
(2) If a registrant fails to verify a current address as required by this section by the date required for the verification, the registrant shall not be prosecuted for a violation of division (A) of section 3797.10 of the Revised Code unless the seven-day period subsequent to that date that the registrant is provided under division (C)(1) of this section to verify the current address has expired and the registrant has not verified the current address prior to the expiration of that seven-day period. Upon the expiration of the seven-day period that the registrant is provided under division (C)(1) of this section to verify the current address, if the registrant has not verified the current address, all of the following apply: