Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
except as otherwise provided , the licence for a digital product is tied to your nintendo account and allows you to use the digital product only on one user device you have linked to your nintendo account and to which the digital product has been downloaded . 

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