LastPass and Authenticator apps have exceptionally poor iPadOS support. Here is a list of the bugs I am experiencing so far, and the list just keeps growing:
* LastPass: Absolutely no integration into form filling for username / password text fields.
* Authenticator: The backup feature completely stopped working. Specifically, it raises a series of prompts to login and select an account in the LastPass application, which FAIL to complete the setup process.
* Authenticator: Rotates to portrait mode and back to landscape on every launch, when using the iPad in landscape orientation, such as with a keyboard case.
* Authenticator: The support feedback contact menu complains that it is unable to submit bug reports.
I am using the latest stable releases for LastPass, Authenticator, and iPadOS.
I've been a paying LastPass subscriber for a number of years. But the lack of support for iPad is enough of a pain that I am considering switching both password management and 2FA to other services. There's not even a public support email address anymore to report all these glitches, so notifying LastPass of the errors involves jumping through a lot of unnecessary hoops.
Could you try uninstalling the LastPass app, restarting your device, then reinstalling to see if it fixes these issues?