Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
no class actions : you may only resolve disputes with fitbit on an individual basis , and may not bring a claim as a plaintiff or a class member in a class , consolidated , or representative action . 

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