用dollar uk网站进入后租车的几个问题，急，谢谢

从dollar.co.uk网站 进入后，选择中国作为居住地，进入了 dollarrentacar.cn网址，在不同套餐选项里的白金选项下，多包括一个All Additional Drivers Charges，这个保险包括什么内容，是给予所有驾驶员的还是只是租车时的驾驶员的？
2.关于通过该网站预定在发生问题是是否有效。看到有这样一段话，关于居住地居民的Residency restrictions:
Local residents may have additional restrictions. Bookings are limited to residents of website’s operating country. If a website in your home country of residence is not currently offered by company, please refer to our company’s .COM website. Please refer to the aforementioned “Drivers Must” clause for driver restrictions.
请问，如果从uk 网站已经进入到dollarrentacar.cn了，是不是说明我们是符合上述Bookings are limited to residents of website’s operating country 的？如果是的话，任何问题，应该找哪里的客服？

谢谢！