Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
at such time , if you do not click `` i accept '' , you may not be able to complete such purchase or gain such access . 

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