If they are unable to give you the r2 version for some reason, let me know and I'll track down my installer from them. They release the program as a freely redistributable tarball, then use a key mechanism to implement the "purchase" part. (You can use it for free for up to a year or 100 transactions, to try it out.) So I don't think there would be an issue with me giving you the tarball I used to setup r2 on my system (which works fine), as you'd still need to purchase a key to get past the trial limit.