Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
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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 . 

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