Отлично работающие сертификаты бесплатно от китайцев
https://buy.wosign.com/free/?lan=en
For Free SSL Certificate, it support 5 domain names for 2 years period; if you need more domains support, then each domain will
be charged US$1.99 per year.The difference between the Free SSL Certificate and charged DV SSL Certificate is the issuer, the
Free SSL issuer is “WoSign CA Free SSL Certificate G2”, but the charged SSL issuer is “WoSign Class 1 DV Server CA G2”.