英语：从你的发票来看，我们发现一些问题，请看下面数据（表格）

There's some doubt/errors/question in your invoice. Please see the following data(form).

question、doubt 是 “质疑”,question 表示质疑时是不可数
error 表示 “差错”

不知道你指的是那种“问题”，自己选吧，但是problem是不行的，表示“难以处理的事情;难题”

We have found a few problems in your invoice as shown in the chart data below.

We found some problems with respect to your invoice(s),please check the table below.

We have a few questions in regard to you invoice. Please kindly find them in the below chart.