The best way to contact the project admins are using email.
First of all, have a look at the EJBCA documentation resources gathered below "EJBCA PKI Docs", "EJBCA OCSP Docs" and "Other documentation" in the main menu.
Secondly, examine the EJBCA FAQ.
Established EJBCA PKI Training
Training Courses for advanced users are held internationally by PrimeKey and their partners.
There are two public EJBCA mailing lists hosted on Sourceforge. To subscribe to either list, or browse archived messages, simply click optional link(s) below.
The ejbca-news list delivers information such as the most recent EJBCA releases and important EJBCA features. This is a low traffic list.
The ejbca-develop list is used for technical discussions. Almost anything regarding EJBCA PKI can be posted on this list.
There are several public discussion forums that are used for EJBCA PKI discussions and requests for help etc.
EJBCA support questions can be asked on the IRC channel (#ejbca) on irc.freenode.net. A nice and free-of-charge, web-based IRC client is available here. PrimeKey is usually available on the IRC channel during European office hours, and occasionally at other times too.