Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
if you do not agree to the change , you may cancel your membership or subscription in your account settings or by emailing help@headspace.com . 

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