The older binary versions are attached at the github releases. You can find them here: https://github.com/Bforartists/Bforartists/releases
Just scroll down and open the assets tab.
The binaries for 2.0 are still at the server, just in case somebody has linked to them. But they are not linked at the page anymore. Just the newest official builds, which is now 2.1.0.
Hope that helps 🙂
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