I am having similar issues. My Express was running fine with my ANT+ and Forerunner. I added the Vivosmart and everything went haywire. I cant even update the Vivosmart. I open express, it recognizes the Vivosmart but once I log in it says "There is a problem with our servers, which means that Express is temporarily unavailable. We are working as fast as we can to get it back up and running. Please try again later." This has been happening for almost 5 days. My phone is having no issues syncing with the Smart via bluetooth, so there is a silver lining. Also, once I added the Vivosmart to Garmin Connect MyFitnessPal stopped syncing. Anyways, is there ANY fix for the Garmin Express server issue? I have tried everything in the FAQ and everything, including Garmin Core Update Service, are functioning properly. Even tried running as Administrator. It would just be nice to be able to update my device. Thank you for your help!