Disable verifying nonce on the register page. * add_filter( 'um_login_allow_nonce_verification', '__return_false' ); */ $allow_nonce_verification = apply_filters( 'um_register_allow_nonce_verification', true, $form_data ); if ( ! $allow_nonce_verification ) { return; } if ( empty( $args['_wpnonce'] ) || ! wp_verify_nonce( $args['_wpnonce'], 'um_register_form' ) ) { // @todo add hookdocs $url = apply_filters( 'um_register_invalid_nonce_redirect_url', add_query_arg( array( 'err' => 'invalid_nonce' ) ) ); um_safe_redirect( $url ); exit; } } } }