"Simple" problem here : Vault is making my server unreachable.

Whenever I add Vault in my plugin folder, everything starts up perfectly... No error messages. Clean!
Yet, it makes my server unreachable... It's giving me "Can't connect" error, as if my server wasn't even running or port fowarded.

As soon as I take the plugin out of the folder, (without making any other change) my server become reachable and everyone can just connect fine. The only weird thing is that I used Vault for at least 2 weeks without getting this strange problem.

Thanks for your help! >.<

This is not a Vault issue. debug your issue with plugins that activate/require Vault, or see if it happens with ONLY Vault installed.

Vault is a passive plugin and does absolutely nothing to the server without being linked to. In addition Vault has no way to do anything with your server that would cause it to not accept connections.