At some point a few months ago, perhaps as a result of a Firefox update, it became difficult to log in to some sites that I've always logged into successfully (ex: NYT). In at least a dozen websites that I try to log in, an error message says that I may be a robot and will not allow me to proceed.

So now, instead of Firefox being my default browser, I've switched to Safari. I've used Firefox for over 20 years, so I'd like to continue using it, but this issue is a critical problem.