Austrian Airlines (and easyjet, BA, Lufthansa) unable to sell tickets.

I started by searching "fly innsbruck london" on google. Austrian Airlines had bought an ad. I clicked on the ad. It returned a simple error page "You don't have permission to access this resource on the server". I went back and selected a different link under austrian.com. I filled in the flight details. There were several form glitches, for example only the digits "20" of the year in the date were visible. On form submission, I got a page with title "Challenge Validation" and "We are processing your request". It never progressed. Nothing happened. Instead, I went to skyscanner, and then easyjet. Easyjet had failed to sell me tickets last time [0]. How will they do this time? [0] < https://wibblement.blogspot.com/2021/12/easyjet-fails.html > Again using my old account (which used to work fine 15 years ago), they again forced a password reset, again switching workflow from web site to email to do this (very bad). I ...