I've just done a clean install of WP on a new host having transferred my domain recently. The only plugin I've installed is Vaultpress yet it is refusing to accept my registration key. Therefore I cannot restore my website.
A registration key can only be used on one site. You can access all of your registration keys in the Account section of the VaultPress dashboard. code: VPR06
I notice Vaultpress says it only works up to WP 3.8.3, but I can't believe that Automattic would develop and charge for a product that won't work on the latest version of WP.
Any ideas why the plugin is refusing my registration key? Is there a setting I need to change on my clean WP install?