Can anyone help me how to reserve for the opera national?

Hello.

Why can’t I reserve this? I’m not Armenian so idk if that matters but gen I tried everything. I switched devices and somehow I can’t book it. I even tried it from the laptop it shows me the same thing, I tried to test it for earlier shows and it still isn’t working, I even emailed them and they told me "book it from our website" when this is their Web. I tried using VPN , it still didn’t work

Can anyone tell me why?😭