Did some fanmade but usually keep it to myself. Never saw pokemon rejuvenation though. Here something I made on a whim, maybe work maybe not tested on myself but please tell if it's working or not.
I'm pretty sure mine is v9, and I did test it till picking the starter.[Link][Link]
How about testing another one ? If it's still doesn't work, mind telling me your version and the where did you get it?
Still doesn't work? I need to step up my game then. Send you my version of the game (modded) via PM. F7 for pokecenter F8 for IV Editor Room F9 for Remote Access to Pc anywhere. F8 will teleport you to a secret room n F8 again to go back. The red guy for all iv 31 and the blue girl for any iv you want except hp. Better keep the hp to 31 max or it cause bug such as long poison damage etc.
Unfortunately, I can't PM you, as it said about you don't have permission to read private message, n I have an unclear view about the forum rules in posting urls or sharing files.