I cannot find 1Password icon in Chrome browser on my Android 9 phone

Thank you.
But the problem is that I cannot save my login in 1Password on my Android phone with 1Password installed.
When I follow the instruction:
"To save a login, sign in to your account on the website. 1Password will ask you to save your username and password. Click Save in 1Password."
the small window "Save in 1Password" does not actually show up.
So I thought that apart from 1Password app installed on my phone I need also Chrome browser extension to be installed on my phone.
I have ticked all 4 boxes in 1Password app:
- Autofill
- Accessibility
- Autofill previews
- Auto-copy one-time passwords
Do you have any idea why I still do not see the window "Save in 1Password"?