Due to some DDOS actions DNS records have to be updated. It may take several hours. Please, wait for a while or add this record to your hosts (https://en.wikipedia.org/wiki/Hosts_file) file: 5.39.4.247 btc-stack.com www.btc-stack.com You may contact us here https://bitcointalk.org/index.php?topic=991547 or email mailbox@btc-stack.com Moving...