Currently 12,298+ is done, and 7,889L is already sieving, but at any time there should be two numbers sieving, why 7,889M is not sieving? Do you forget it?

We only need one number sieving in each queue to supply the clients. Currently both f_small and f queues have only one number sieving. Once 7,889L is close to done, I'll start 7,889M.

Okay.

Besides, can https://escatter11.fullerton.edu/nfs/numbers.php include all numbers with SNFS difficulty <= 325? (In the past this list includes many numbers whose “status” are neither “sieving” nor “queued”, see https://web.archive.org/web/20210304225928/https://escatter11.fullerton.edu/nfs/numbers.php)
https://homes.cerias.purdue.edu/~ssw/cun/who.txt says that all of them (except 11,341- and 11,311+) are reserved.

At that time there was a backlog of numbers waiting for the linear algebra to be run. That backlog has now been cleared. The reserved numbers will appear on the page as they are entered into the BOINC queue.