母亲通过中信银行递交的美国签证申请被要求转面签，我去了https://www.ustraveldocs.com/cn/en/nonimmigrant-visa这个网站，log in进去，被要求选择面谈的日期和时间，可是点进去之后一片空白，根本没法选。请问这个网站是正确的吗？谢谢 另外，递签被拒要求转面签的那张单子上要求母亲提供1. detailed CV in English, including a list of publications; 2. detailed description of your US-based research; 3, invitation letter form business or school where you will work。母亲只是来我这里探亲，如何提供这些材料？还是我给visa officer写封信，解释下母亲只是探亲，不是商务旅游？
另外，递签被拒要求转面签的那张单子上要求母亲提供1. detailed CV in English, including a list of publications; 2. detailed description of your US-based research; 3, invitation letter form business or school where you will work。母亲只是来我这里探亲，如何提供这些材料？还是我给visa officer写封信，解释下母亲只是探亲，不是商务旅游？