Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
you acknowledge that supercell is not required to provide a refund for any reason , and that you will not receive money or other compensation for unused virtual items when an account is closed , whether such closure was voluntary or involuntary . 

```
. OPTIONS: ["Contract by using", "Content removal", "Unilateral termination", "Choice of law", "Limitation of liability", "Unilateral change", "Arbitration", "None", "Jurisdiction"].