If you want this to ever be updated, then prepare to get arrested.
Because the only way this would ever get updated to later versions would be if someone was able to steal the official server files from Hoyoverse (as stated by the developer of this private server)
The only reason this gio 3.2 even exists in the first place was because a dev leaked the official server files back then iirc, so it is not as simple as just "updating" the app (like with other games)