Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
unless otherwise specifically indicated , all notices given by you to us must be given to headspace at help@headspace.com . 

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