Sites do not accept the RSS feed of the site. What am I doing wrong?

Question

RSS

There is a blog, I made an rss feed https://blog.erp.band/rss . According to my ideas about the RSS feed, it forms everything correctly.
Checked with RSS Feed Reader (extensions on google chrome) - sees. But for example, I can’t subscribe to this feed at https://news.yandex.ru/mynews , and I also didn’t see it on other sites.
The question is, what am I doing wrong? (Screens below)

Answer 1

First, you need to check the W3C Feed Validation Service .
Secondly, you have the date of publication and the last update everywhere Thu, 01 Jan 1970 03:00:00 +0300.