Overview

• Customers at multiple institutions, including Itaú, Nubank, Bradesco and Caixa, reported difficulty paying boletos and completing Pix transfers on Monday.
• Downdetector logged complaint spikes from late morning, and by 14:00–14:30 Itaú had about 1,200 reports while Caixa had roughly 120.
• Itaú said a punctual instability affected a portion of clients and stated that teams are working to normalize services.
• In replies to users, Itaú attributed boleto problems to a broader NUCLEA instability affecting financial institutions, with the cause being investigated.
• Banco do Brasil reported normal operations and Nubank said it found no issue, as the disruption hit on the fifth business day when bill payments typically surge.