Problems authorising new Kobo...

When I try to authorise my new eReader within the Adobe digital editions software, I get the following message: Activation Server Error Code: E_AUTH_NOT_READY Digital Editions encountered an error on the activation server. I can read books via my PC no problem so I assume my Adobe ID is fine, but I can't authorise the device nor transfer books to it... anyone got any ideas?  Adobe chat said they don't support ADE now so pointed me to this forum for help! 🙂