this is what able in android Proton Pass on Android: Password Generation and Saving
Password Generation

Manual Generation: When creating or editing a login entry in the Proton Pass app, you can tap the password field and select "Generate password" to create a new one.

No Autogenerate at Sign-Up: Unlike the browser extension on Windows, Proton Pass on Android does not automatically generate and suggest a password when you tap a password field on a website or app during sign-up. You must create the login entry in Proton Pass first, generate a password there, and then copy-paste it into the sign-up form.

Autofill

Autofill for Logins: Once a login is saved in Proton Pass, you can use Android’s autofill service to fill username and password fields on websites and apps.

No Autofill for New Sign-Ups: Autofill works for existing logins, not for generating new passwords during sign-up unless you manually add the login first and generate the password within Proton Pass.

Workflow for New Passwords on Android
Open Proton Pass App

Create a New Login: Tap the "+" button, enter the website/service name, username, and tap the password field.

Generate Password: Select "Generate password" to create a new password.

Save the Login: Confirm and save the new login entry.

Copy-Paste Password: Return to the sign-up form, paste the generated password, and complete registration.

Autofill for Future Logins: For future logins, Proton Pass will autofill the saved credentials.

Limitations and User Experience
No Automatic Password Generation at Sign-Up: You cannot generate a password directly in the browser or app sign-up form on Android like you can with the Windows extension.

Manual Steps Required: The process is less streamlined than on desktop, requiring manual creation and copy-pasting of passwords.

No Prompt to Save New Credentials Automatically: After sign-up, you must manually ensure the password is updated in Proton Pass if it differs from what you generated and pasted

and this is what available in windows using extension
Proton Pass Password Generation and Saving
Autosuggest and Autosave:
Proton Pass will automatically suggest a new password (random or passphrase, based on your settings) when you create a new account or when it does not recognize a saved login for the current website.

Browser Extension: The autosuggest feature activates when you click on a password field and there is no saved entry for the site.

Manual Entry: If you have an existing password in your vault, Proton Pass may still suggest a new password in certain cases, especially if the URL is not recognized or is different from the stored one.

Autosave on Account Creation:
When you create a new account, Proton Pass should prompt you to save the new credentials (username and password) after you submit the sign-up form.

Prompt to Save:
After you use a suggested password and complete the sign-up or login process, Proton Pass will usually show a notification asking if you want to save the credentials. You must confirm this prompt for the entry to be added to your vault.

can u make the android version of proton pass work like in extension one ,if the login credentials is not available automatically suggest a new password for sign up and auto save the password in the database for saved passwords

Please make a function on iOS, that it shows a button, if you want save a new password, so it doesn‘t has to be put in Proton Pass manually, like on Apple‘s Password manager.

When opening the proton pass window from the keyboard it is not an option to generate a password when creating a new login. now I have to go to the app, copy a generated password and paste it in the window.