We typically submit CPEs gained within the last month, in the first two weeks of each month to (ISC)² and it takes about 15 working days for them to register the CPEs to your account.
For example, CPEs collected in April will be submitted in the first two weeks of May. So, if the missing CPEs are taken this month, you need to wait a bit more, and they will credit them to your (ISC)² ID. They typically allocate them in 15 working days from the day we submit them.