Repair AutoSSL Generator on Centos 6 and generate new certificate

I try to renew my expired SSL certificate from Let's Encrypt. There was green confirmation message, but nothing happend. I remove that certificate and try to generate it again. Then I have an error: Errors occurred on installation process. - [login to view URL] Error Message: AutoSSL Issue Failed! ->[Mon Dec 28 12:21:01 CET 2020] Multi domain='DNS:[login to view URL],DNS:[login to view URL]' [Mon Dec 28 12:21:01 CET 2020] Getting domain auth token for each domain [Mon Dec 28 12:21:01 CET 2020] Getting webroot for domain='[login to view URL]' [Mon Dec 28 12:21:01 CET 2020] Getting new-authz for domain='[login to view URL]' [Mon Dec 28 12:21:03 CET 2020] The new-authz request is ok. [Mon Dec 28 12:21:03 CET 2020] new-authz error: {"type":"urn:acme:error:unauthorized","detail":"Error creating new authz :: Validations for new domains are disabled in the V1 API ([login to view URL])","status": 403} [Mon Dec 28 12:21:03 CET 2020] Please check log file for more details: /root/.[login to view URL] I attached error from [login to view URL] --- What should you do? - Generate new SSL certificate for my domain and install it ASAP - Repair that system and make it work automatic OPTIONAL: Please let me know what is your price for update Centos 6 to Centos 8.