There is a warning when accessing this site
"Your connection is not private"
"Attackers might try to steal your information from blockchain.poker (for example, passwords, messages, or credit cards)"
I think people should be careful about accessing this site.
For Op, is there a way to anticipate that?
Can you contact
support@blockchain.poker so they can look into it? Perhaps there's something different about your setup (browser, OS, etc).