Why am I seeing "This account has reached the fixed block count 5120000" in List accounts, and when running the API command
With cPanel version 104, we added a check that allows server administrators to see which users are consuming a large number of blocks on disk at a glance. This warning was shown to users who had unlimited quotas, which led to confusion.
In version 106, we silenced these warnings for unlimited users. If you're seeing this message for accounts version 106 and after, it means the user has used at least 75 percent of its disk space allotment.