1.Tell them go to create an account and check they did it immediately.
2.OMG. As a young person or modern person, it shouldn't happen, but tell them when you creating your account,the system will teach you how to use it.
3.To me,it's forbidden. I will reject their mails and tell them to rewrite it.
Second Question:
1.We can saving papers.
2.We can communicate to everyone right away.