How long is a free trial for Spark Premium? Can I extend or reschedule it?
Spark 专业版免费试用多长时间？我可以延期或重新选择时间吗？
At the moment the trial for Spark Premium is 7 days, but don’t hesitate to drop a line to our support team in case you need to prolong it or change the starting day.
目前 Spark 专业版试用期为7天，但如果您需要延长试用期或更改开始日期，请随时与我们的支持团队联系。