Mass Mail not working in ECRM

[lerg57]

I have installed ECRM version 4.27 in AWS thru Bitnami.
I am trying to make MASS mail and it is not working. SIngle mail works fine.
I wrote in Scheduled Jobs > Send Mass Emails and in the Crontab thru SSH:

* * * * * php -f /opt/bitnami/apps/espocrm/htdocs/cron.php > /dev/null 2>&1 Did not work
* * * * * /usr/bin/php -f /opt/bitnami/apps/espocrm/htdocs/cron.php > /dev/null 2>&1 Did not work

Also wrote in Scheduled Jobs > Send Mass Emails:

*/2 * * * * Did not work
* * * * * Did not work


I'll appreciate if you advise what to do

Thank you

Luis R
Mexico