If you are having difficulty with Google Classroom please check out these tutorials online
How to submit work in Google Classroom.
On computer –
https://support.google.com/edu/classroom/answer/6020285?co=GENIE.Platform%3DDesktop&hl=en
For Android (phone)-
https://support.google.com/edu/classroom/answer/6020285?co=GENIE.Platform%3DAndroid&hl=en
