Deductions & credits

I'm using TurboTax for the 2021 tax year on MacOS X Big Sur and also am getting stuck on the medical travel page. I didn't even try to enter miles but just clicked Continue. I got the same message as the original poster and clicking Continue still didn't work. I installed the latest updates but Continue on the medical travel page still didn't work. How could such a problem be undetected in program testing?