Hindawi出版社，状态是under review，显示了payment details

　　Hindawi出版社，状态是under review，显示了payment details。各位大神，能否解释下，这是为啥。
某四区SCI。
今天看到，状态虽然是under review
可边上显示了payment details的字样，点击后看到the charges for this article are listed below
这是为何。
===有问必答===
你好,我也遇到了同样的问题，我QQ928424264，能不能私下交流？
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Allow me to clarify that this page is for informational purpose only. It shows the manuscript details and the expected charges to be assigned to your manuscript in case of acceptance.
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哪位兄弟知道怎么在hindawi下面的系统提交修改稿啊？找了半天找不到