Firefox insisting on passkey for Paypal

It's most likely PayPal insisting to upgrade to a Passkey — try to find a pane or option to get rid of that on their side, if you only intend to use passwords. Like, "X" buttons, "Try Another Way" etc. — I know they make it hard, sometimes folks have to manually go back to the home page again agter closing the Passkey prompt etc. — but that's all coming from the site operator, they think they're smarter… 🤷

(There's way to disable Webauthn functionality as a whole, in case you don't intent to use that wholesale, across all sites, and don't use any Webauth credentials elsewhere, but trying to squelch PayPal would be more preferable I guess.)

kfingleton41, Firefox has recently started requesting device sign in from some users before it will allow them to access the passwords stored within the browser.

It might be worth seeing if Firefox has the setting "Require device sign in to fill and manage passwords" enabled, to check if this is what is causing the authentification prompts that you are seeing.

This article has more information. https://support.mozilla.org/en-US/kb/firefox-password-authentification-prompt