I have a Garmin 810 and store my activities on the removable memory card.
Auto downloading device to Garmin connect has never worked via phone or connecting device direct to PC.
On the old Garmin connect setup and device connected direct to PC you could choose auto upload option from sd card but it would start upload poses and then seems to freeze
Using Garmin express and new Garmin connect look you do not get to choose the sd card as source when syncing device. when running the sync it would simply say 'nothing to sync'
I presume this is because i do not use my 810's internal storage but store direct to memory card
Trying to sync via phone with new Garmin connect features via Bluetooth the sync process starts when paired but always fails to complete. It has once happened that one of several activities transfer d to Garmin connect but that was it
Am i missing something