i want to help correct other's writing, but it does't work. i don't know why.
What is happening exactly? Are you on the Exchange page? Are you clicking the Fulfil Request button? If you could provide more details, that will help us resolve your issue.
when i clicked the fuifil request button, it turned to a page with 原始版本and 修正版本，but i couldn't type on both of them. but i could type on the comment.
@yanqiaoli, if it is possible, please make a screenshot of what you see when clicking "fulfill request" button.