Hi did you make any progress?
You need to use a client that is appropriate for the server, in the case of Apollo this is either a 317 or 377. Afaik Apollo does everything properly so the heavily modified hacks in the client section which do things like change NPC bits or add random bytes might not work, you'll have better luck with a deob.
Do remember to enable the update server and change the rsa modulus and put the key client side too.