关于neu cs align推荐信submit后能否修改的问题

lz目前在申neu align spring的项目，昨天初步写好了essay，也联系到了两位老师和一位同事进行推荐。

今天查了地里的帖子，才知道推荐信是要在打分后通过附件形式上传的，我昨天还以为只需要打分就好了T T

但是有两个推荐人已经上传了“仅打分”的推荐，目前我的问题是：
1. 仅打分是可以的吗...
2. 如果必须要推荐信，那现在还能让推荐人改吗？（我的申请还没submit）
3. 大家推荐信都写多少字哇？

提前感谢大家了！

补充内容 (2021-07-27 12:15 +08:00):
今天收到了van校区advisor的回复，如果有遇到同样的问题的同学请不吝参考。

1. Are the letters of recommendation essential to the application process?
A：As long as they have submitted the recommendations its all good

2. If I do need them, is there any way for them to upload the letters even if they already hit the submit button?
A：Please email [email protected] and they will be able to assist you with this

3. About letters of recommendation: How many words are needed or can best describe my potentials but not too long?
A：There is no word limit