I have follow the other post to fix it and contact my server provider. they replied as below:
“'m very sorry to know that you’ve run into this problem. I have reviewed error message in screenshot. It appears like you are experncing issue with installed SSL certificate at ClodFlare’s end. I have verified SSL certificate status at sslshopper.com/ssl-checker.html#hostname=ios-data-recovery.com where it shows SSL certificate from Cloudflare, Inc. It appears like SSL certificate which is purchased in our server is not installed at Cloudflare’s end. Please download SSL certificate and then install certificate at Cloudflare’s end.”