I'm sure you'll get your refund since it's never arguing in cases like this ("the customer is always right" and whatnot), but you've terribly misunderstood what EasyRE does and are holding the wrong party hostage here, in all events.
EasyRE does not touch the SAM registry hive where passwords are stored during an automated repair. EasyRE also does not create any partitions. When I say these two things, I do not mean "EasyRE does not mess up your passwords and EasyRE shouldn't have created the partition you're seeing" - what I mean is "EasyRE is not physically capable of changing your passwords or creating a partition because the code to do so (literally) does not (yet) exist." These are features that people have requested from us off and on for a few years that we have never implemented. EasyRE can't be responsible for these because, quite simply, we never made it smart enough to do that. Unless we've created an AI completely unawares that is slowly taking over the world, one mangled password at a time, it's not EasyRE to blame.
WINRE is not EasyRE. WinRE is Windows Recovery. That partition is created by Microsoft when you first install Windows on a clean (formatted) drive (or when you buy your PC from the factory). What EasyRE can do is in the process of repairing your PC make Windows recognize and mount partitions that it was previously ignoring (which can cause boot failure if Windows winds up "ignoring" its own system partitions, otherwise).
I have no idea what was going on with your machine (and the dearth of any relevant details or background info in this thread does not help); my suspicion is that you have a rootkit or simply managed to run into the "perfect storm" of events where a virus or failed software update (they're virtually indistinguishable) took your system down, disk corruption wiped out changes to the SAM, EasyRE repaired the failed boot and got your PC back up and running, and then the blame for everything else that was wrong but EasyRE simply hadn't repaired was pinned on EasyRE - but we get that a lot, and you'll have your refund. Glad your PC is working.