Despite paying for an expensive family plan for years, this application still performs underwhelming. The auto login often fails, even has to be disabled for some websites, otherwise I just can't log in. I always tell Dashlane to remember my sign-in for 2 weeks, but when switching networks, or being offline on browser startup, I need to enter my master password (over 20 characters) again. The mobile version is even much worse. When it works, it works great, and core functionality is pretty good, but it's disappointing overall.

Cannot manage account without installing the extension.
Cannot delete a pre-existing account without paying for a plan.

Edit: After talking to support, you CAN delete your account without a plan. But, you need to go directly to the account deletion page (I would link, but cannot include links in add-on reviews). Also, you must have the extension installed to access the account deletion page, you do not need to be logged in, just have the extension installed.

It's reeeeally useful add-on

Used for 10 yrs or so. Never a problem.

Worst updates ever