If you need to upload your ID into the app, you can do so from your Profile page (fourth tab in the app).
You will have to go through the Verify Identity flow again:
It will ask you to confirm your details:
And drop you on the Profile page to Complete your Account Verification:
Once you are on your Profile page, you can click on "Complete Account Verification" which will ask you to upload one of these documents.
From there, you can follow the instructions on uploading your ID.