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    Is there a charge for using the message subscription feature to obtain the device status?
    Do I need to enable IoT Core connection services even if I have few smart devices?
    After purchasing an IoT connectivity service, can all the cloud projects I create share this service?
    Can the IoT Core service be billed based on the number of calls instead of choosing a resource package?
    Can I continue to use IoT Core after the trial period expires?
    How many devices does the IoT Core connection service beta support?
    The IoT Core connection service has expired, how to extend it?
    What happens if the free trial period expires or the membership expires?
    How can I use Tuya Cloud Development for free?
    If I activate the membership during free trial period, how will the membership period be calculated?

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