Even though I only use their iOS version I'm not taking any chances with something as important as this, so decided to ditch Authy on the phone. I looked at a f

Even though I only use their iOS version I'm not taking any chances with something as important as this, so decided to ditch Authy on the phone. I looked at a few alternatives, and was pleasantly surprised at the built-in option on iOS and MacOS (and they automatically stay synced between phone and Mac if you're on iCloud). Instead of trying to extract the settings out of Authy, I simply visited each of the sites for which I have 2FA turned on, logged in with the Authy code (for the last time), went to the account config/profile section of the web page and chose "Setup new authenticator" (or similar). Then it shows you a new QR code. At this moment on your iPhone you switch to the Passwords app which is under Settings->Passwords and search for the website or enter a new record. Then click on "Set Up Verification Code", and choose the option to scan the QR code. That's all there's to it. From then on you can log in either from your iPhone or Mac, and doing the fingerprint/FaceId will enter the TOTP code. Tip: After making the change on each website, open an incognito/private browsing window and log in again. That way old cookies can't mess things up. I found one site where the re-doing of the 2FA hadn't worked properly this way.