If you do not see the 'Add to Home Screen' option, you are most likely accessing the link from the Gmail app or another app, not from Safari directly.
In this case:
- Select the 'Copy' option from the share screen, it should be the first option.
- Go to your Safari browser outside the current app.
- Paste the link on Safari then follow the add to home screen instructions from there.
If you are still having issues adding the app to your home screen, please email firstname.lastname@example.org.