This morning I tried charging my Fenix 5X. At first, I connected it to my Mac (via USB C to USB A dongle), which has never been a problem. However, for around 30 minutes the battery level didn't change at all, while the device was connected and discovered by the Mac (it was visible in Finder, and Garmin Express synced it). I tried reconnecting a number of times, but without any difference. Also, I soft rebooted the device.
Then I connected it to a wall plug, which only seemed to discharge the device (from 39% to 36%). I wiped the connector on the cable and on the device with a soft cloth afterwards, although both connectors look fine anyway. Any clue on what might help?