The writers ask us to go to a web page or open a file linked to the email.

邮件发送人让我们进入一个网页或打开邮件中的链接文件。

To buy more time, you can request automatic 6-month extension of time-to-file through the free file link at IRS.gov.

为了争取更多时间，你可以在国税局网站上点击免费申报链接，要求自动延长长个月的申报时间。