Auto-Purge feature is not working

Is cron configured correctly for that site? Auto purging works by running a queue on cron.

Even when I run the trash cron job manually, I'm getting the success message. But the content is still present in Trash.

I just tried it locally by setting the auto-purge duration to 1 second, deleted a node which went to trash, ran drush cron and the node was purged from trash.

What do you mean by "run the trash cron job manually"? You can run Drupal's cron either from the UI (admin/config/system/cron) or using Drush (drush cron).

I tried to run cron through UI, It didn't worked (might be our site issue). But when I run cron through drush command, It's working and the content got purged from trash.

Thanks for ur quick response. I'll close this issue.

Nice, I'm glad you figured it out.