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Frequently asked questions

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Frequently asked questions

Resources & Services>Products>Frequently asked questions

E发票助手的试用期可以延长么？试用期起始时间是什么？是以开通试用期的当天开始算的么

Time：2022-04-08

您好，E发票助手的试用期不能延长，试用期均是七天；试用期开始时间是下载软件的当天。感谢您的咨询，祝您生活愉快。

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单机盘用户开启百望云助手，右下角提示usbkey未打开，如何处理？

在哪里查看异常状态的发票

已经作废的发票，可以打印么？

百望云系统作废的发票可以打印吗？

进项企业黑名单在哪里添加？

使用百望云系统，发票打印显示成功了实际上打印机没有反应，如何处理？

调用[发票开具接口]失败，保存待开发票失败！失败代码【30507016】

如何将已开发票传到百望云系统？

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核心板变更企业信息，需要做什么操作

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