I have a vaccine appointment. The site I registered with has a very bizarre failure mode if you try to use Firefox to get the appointment and I can't for the life of me figure out how they managed to break things in the very specific way that they did (using Chrome, you enter your registration code and get the page to choose your appointment.With Firefox, it instead takes you to the survey for doing the initial registration and errors out a few pages in because you've already done that step).