Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
before filing a claim against fitbit , you agree to try to resolve the dispute informally by contacting support@fitbit.com . 

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