I have seen previous posts with the same issue I am having using passwordless authentication on LastPass with LastPass Authenticator. I get notification then when I press Accept, I get the error message and cannot go back authenticator for my other passcodes unless I force close Authenticator. All the other solutions suggested updating to the latest version. I believe I am on the latest versions and still having the problem.
I am running Authenticator version 18.104.22.1685 on an iPhone 14 Pro Max and iOS 16.0.3
The LastPass Extension I am running on my computer is version 4.102.1