At the moment I am not able to register my device (nüvi 2599LMT-D) with Garmin (it is recognized by Windows and also Garmin Express!).
After installing Garmin Express 7.13.1.0 (but also under 7.12.1.0) I get the following message when trying to register:
Server error
There is a problem communicating with our servers.
Try again or Register later
I've been trying this since yesterday, but there is no change.