If you increase hreflang tags, ensure they all point to indexable and crawlable pages. Verify which tags are causing the issues and rectify them by making sure the pages they’re pointing to are Reside.  Yandex: Russia’s most popular online search engine also supports hreflang tags. It works by using them https://bookmarkpath.com/story18748888/the-greatest-guide-to-automatische-hreflang-tags-en-canonieke-tags-seo