The "GUI" is basically a console. This allows me to encrypt all text output and input and prevents the anticheat from being to scan for static GUI elements (buttons, etc.). For that reason, it can seem a little daunting at first. However, if you just follow the steps in the guide in order, you will not have any problems.
Combat scripts are provided for free with the program. They work on any class, and they work 'very' well with perfect animation canceling for all cooldowns.
For gathering/farm bot, you can set up your own waymark route or buy a premade script from someone off Discord. There's lots of stuff from pet farming to abyss farming, along with plenty of examples and videos.
Edit: To clarify, yes, there are tons of scripts available for the program made by the community:
https://speedercheats.vip/aion-2-marketplace/.