TextMeshPro (Paid/Source Code) for Unity 2017.x archive download

Currently working on a set of projects in Unity 2017.1 - 2017.4 that need to have support for 2017’s TextMeshPro (Paid/Source Code) version. Is there an archive where I can download previous versions?

Migrating to a newer version will not be an option btw since my team needs to test with earlier versions.

Source code versions of TextMesh Pro continue to be available on the TMP user forum for those who registered in the past and purchased the source code version.

Thanks for the reply! If I haven’t purchased the source code version in the past, is there a way I can register and purchase? It looks like registration is closed to gain access.