The source code is added to: https://git.key4ce.com/SolidCP/v2.x
just make sure you login with your GitLab account and you will have access.
If you do not yet have a GitLab account please sign up to the Contributers License Agreement and we will send over the information.
(we have put the source restrictions on after we found out people mis-used our source code, hopefully we can push it fully public again soon).