Unable to access public procurement website. What is the reason?

Question

Browsers

Hello! When trying to log in to a government procurement site in IE11, this message appears. Through chrome. Yandex.Browser The public procurement site and Google itself indicate the need to use TLS 1.0., It is enabled in the settings. And also, according to the recommendations of the site, versions of Crypto-Pro and EDS Browser Plug-in were checked. The versions are up to date. What else could be the problem, please?

Answer 1

in the server/certificate of the public procurement site itself