Saving problems

I sent you a comment but you didnt share it. Why? Anyway,
Please be more careful about the saving issues. I wrote a story- it was necessary for my homework- and i tried very hard to write it. It was difficult to me. Then i saved it and went back to main page. I wanted to control my homework to give it and is everything okay but when i opened my saving the whole story was gone and nothing happened the other questions. Why did this happen? If this happens again i will go a step further.
Yours faithfully

An upset student about Google Classroom, v2.2016.392