Good detective work. I have since tried on different devices and it is now working. I also tried the phone again and that is working. Not sure what the problem was but another responder mentioned they had seen a similar problem.
I had not tried that but it makes sense. My theory is that a cookie had been set and I was about to delete Rivian cookies when I saw your reply. I had been using my phone and switched to my computer and it works. I have also tried the phone again and that works. It seems to be inconclusive...
I just tried to check on availability of test times for the R2 and the screen no longer allows you to to click on the R2. You can select either R1 but not the R2. Furthermore the button text now says
“R2
Available at select locations in 2027”
Any idea what is going on?