Snapshot lifetime with replication

Greetings,
i read everything in the forum and still have questions.
I have Freenas FreeNAS-11.3-U4.1
32GB RAM
6x4TB HDD RAIDZ2
I have dataset with 3 zvol's
Snapshots (daily) on same pool with replication to another pool

I am trying to make the snapshot disapear after 3 days, but it doesnt work.
Please advise why it is not deleting after the lifetime.
P.S. i have deleted some manualy so you will see 3 or 5 files

Thank you