延期开学英文

I want to apply to postpone the start time of school because the visa is rejected，but the online information prompt me to pay again，so I don't know how to do

Because of visa refusal, I want to apply for postponing the beginning of the term. However, the online system indicates that I need to make payment again. I do not know how to handle it.

Flu outbreak forced the beginning of new term one week delay.