Please use the issue system in the github project page: https://github.com/dalibo/pitrery/issues
The mailing list hosted on librelist. It can be used for general questions and development discussions.
To subscribe, send a mail to email@example.com, you will receive a confirmation mail explaining what to do next.
The archives are are available at librelist.
Dalibo, as the sponsor of the project, can provide enterprise grade support services for PostgreSQL and pitrery. See http://www.dalibo.com.
Other companies close to you can be found on the PostgreSQL Professional Services page on the website of PostgreSQL.