Purge of records older than 30 days

Hello,

In your documentation, you say :

Will it make my database slow ?
we’ve taken reasonable steps to not slow the database.
we have no indexes on the table, so inserts are fast.
we prune the table to only keep the last 30 days.

I installed your plugin on October 13, 2018 and December 5, 2018, which is almost 50 days and no record was destroyed.

Why 30-day old recordings are not destroyed as indicated in your documentation.

How to enable purge of records older than 30 days?

Thank you

Raynald