@dim torrent You don't have HTTPS enabled or are missing the SSL certificate that would be generated by following our guide: https://pterodactyl.io/tutorials/creating_ssl_certificates.html
When using Cloudflare proxy for your Wings FQDN, the Node/Wings Port should be set to 8443, which is a HTTPS Port on Cloudflare. The default Wings port 8080 is HTTP only on Cloudflare and, as such, will cause SSL protocol errors. Make sure to have Node settings set to "not behind proxy" when using full SSL settings.