This is my best interpretation of Google translate. Native Korean speakers please feel free to help with translation!
What is the level cap in CBT?
The character level cap is LV35.
There is no Heavy Gunner, Berserker, and Thief in this CBT.
I sold my items in the store, can I recover it?
There is a re-purchase tab.
Are my characters and data removed after CBT?
Yes, they are deleted after CBt
Where are screenshots stored?