I’m thinking maybe we should add GBA4IOS both versions onto the allowed Emulators list with a recording app that you need to start recording before you enter the emulator and Pokémon Crystal. Anyone with me on this one for us IPhone users?

There is zero chance your iphone and that emu is going to emulate the game accurately enough for it be accepted.

GBA4IOS is not listed as an accepted emulator as it does not currently emulate the rng of the gameboy games correctly. The accepted emulator for this game is Gambatte-speedrun, which is easily available for download with a google search, via the resources on this site or via the psr discord pinned messages.