I totally agree, I spent like 10 minutes using different key words in the search line to find the complete 2-days event on its own, when I finally decide to open the single day to check the prize 'just in case'... And after that I still needed a moment to realize that I needed to click on the red button.
'abbonamento fisso' It's not even that explicative in Italian (the adjective 'fisso' doesn't work very well in this case, imho). I don't know the english version.
Ps second ring practically sold out
I'm not so sure about your statement. I refreshed the page several times yesterday and I'm pretty sure I was one of the first people to buy a ticket trough the regular sales. Bought two tickets in a sector 3rd ring and still all the seats, which were available yesterday, are available. Also some places in the 2nd ring were already sold, when the regular sale started, to people with a Perugia seasonticket.