Why ForgRock stop supporting OpenAM JEE Policy Agents(3.5) https://backstage.forgerock.com/docs/openam-jee-policy-agents/3.5/jee-users-guide/
and the newer versions from Java Agents 5.x only support AM 5.5 and later. and Not Support openAM https://backstage.forgerock.com/docs/openam-jee-policy-agents/5/java-agents-rnotes/
Why ForgRock stop supporting OpenAM JEE Policy Agents(3.5)
No company can provide support for each and every version for ever.
and the newer versions from Java Agents 5.x only support AM 5.5 and later. and Not Support openAM
ForgeRock Access Manager has been evolving over time and got rid of some of the quite old legacy stuff of its predecessors. Agents 5 have moved to using REST APIs instead of the old XMl/HTTP protocol, but those REST APIs are not offered by OpenAM.