Jailbreaking is allowed in Graal in some cases
1.iFile is allowed because players use it to find heads/bodies/shields through the directory system in the Graal Classic App.
2.These hacks you refer to are only clientside. Most people will not see these hacks as if it doesn't mess around with the serverside at all.
Example: Rename the Skeleton Dragon's image file to Dragon.PNG (or whatever the dragon's image file is). It will show you as a Skeleton Dragon but in the Serverside, everyone will see that you're the regular Dragon, meaning you're not the Skeleton Dragon at all really
Graal Classic cannot be used for trainers, actual hacks through another app, or fake purchases. Any one of those used through jailbreaking will perma-ban your IP and your account from one of the staffs.