I seen the white list of whoville and it's Not allowing me to join.

And I can't find the version it is hosted on.

The server is 1.9.2 Vanilla

The server has recently been updated to 1.10 vanilla.

However, at the moment we've been having trouble with booting the server up, so that may be the issue.

We'll double check to make sure you have been whitelisted in-game.

What he said. Whoville has had a lot of downtime lately. It's not just your problem; everyone has it.