Bitnami Installation - Password related

I launched Piwik using the AWS Marketplace ( https://bitnami.com/stack/piwik/cloud/amazon2 ). Everything went fine until I get to the Piwik login screen … I cannot locate the password the system randomly generated.

I follow Bitnami’s instructions https://wiki.bitnami.com/Amazon_cloud/Where_can_I_find_my_AWS_Marketplace_credentials%253f#How_to_reset_the_application_password.3f2 and I go to the system log, but there is no password there (as shown in the instructions)…how do I retrieve the randomly generated password?

I tried triggering the “lost password?” but it says "Error : Unable to send mail. Possible reason: your host may have disabled the mail() function.
Please contact your Piwik administrator. "Sales Funnels | Increase Customer Acquisition

…any suggestions?

Thanks!