According to BlockBeats, on September 22, Jesse Pollak, head of the Base protocol, said in a post that at 23:38 Beijing time on September 22, the Base team found that the performance of its main network was declining, including the main network (public RPC API, deposits, withdrawals, batch submissions, blocks), resulting in delayed transactions. The team is aware of the problem.
As of the time of posting, the problem has been fixed.