The attached links explain the situation.
TLDR: The agreement between the government and the contracted factory has ended, which is resulting in the delay of cards issuance. On February 14, 2024, a statement was published in the “Official Gazette of the Union” (Diário Oficial da União) by the General Coordination of Administration of the Federal Police (Coordenador-Geral de Adminsitração - Polícia Federal), announcing the suspension of the current bidding process, initiated at the beginning of the year, for the electronic auction to contract an integrated collection and registration service for data used in issuing National Migration Registration Cards (CRNM -- Carteira de Registro Nacional Migratório) and Provisional National Migration Registration Documents (DPRNM -- Documento Provisório de Registro Nacional Migratório).
https://kpmg.com/xx/en/home/insights/2024/03/flash-alert-2024-048.html
https://www.fragomen.com/insights/brazil-rnm-card-issuance-temporarily-suspended.html