Note that non-browsers are blocked from accessing the website. Yandex’s testing service may be blocked (That’s what is looks like), but the actual crawler should have access unless it was blocked due to the Ukraine conflict.
Thanks for the reply. Everything works from the browser, Google search also works with the site. It seems that the Yandex service is blocked due to the conflict in Ukraine.
Yandex is indeed blocked. But I’ve been told that this is mostly because their crawlers are quite aggressive while only representing a small source of traffic for most websites. It was decided that it was simply not worth it to spend server power on this.