If the mark published in the wrong class of the goods/services, the examining attorney must ensure that the classification is corrected. This may be done in an examiner’s amendment without prior approval by the applicant ( see TMEP §707.02). Republication is not required.
If class(es) are added to the application after the filing of the statement of use, the examining attorney must require payment of the fee(s) for filing the statement of use for the added class(es), in addition to the fee(s) required by 37 C.F.R. §2.6(a)(1) for adding a class(es) to the application. TMEP §1403.02(c).