Contributing Authors是什么意思呢？

杂志社发来了一个邮件，邮件内容：Please click the link below to confirm that you are a contributing author of this paper. Upon clicking the link, you will be taken to a web page to answer the terms of the copyright agreement。然后我就点了下面的链接填写了一些内容，然后提交后再登录自己的账户就登不上去了。这个Contributing Authors是什么意思呀，应该第一作者填还是通讯作者填呢？求大神解惑。