Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
you can control most communications from the fitbit service by using your account settings . 

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