Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
airbnb may restrict the availability of the airbnb platform or certain areas or features thereof , if this is necessary in view of capacity limits , the security or integrity of our servers , or to carry out maintenance measures that ensure the proper or improved functioning of the airbnb platform . 

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