Since version 2.2.3.2 is an older classic build, downloads are usually hosted by individual server projects:
A "Pure" RF Online Golden Mystery 2.2.3.2 download means you are getting the raw client files. It preserves the original armor aesthetics, the classic weapon sound effects, and the intended gameplay mechanics. It is the closest you can get to playing on the original CCR (Korean) server back in its prime.
If you want to play online using your client, look for servers running the "Classic Gold" meta. Popular options include: