due to many changes, you'll have to redownload it completely as opposed to patching it ^^ the download link is here: https://www.rejuvenationgame.com/downloads
i don't think you can get a ralts as a starter if you're trying to get it from the random starter picker? you can debug it and change your starter pokemon to be a female ralts, however
i don't believe you need to change its ability to evolve it into lycanroc midnight, just make sure you evolve it at night ^^ unsure if you can change it with an ability capsule, but it should work?