S2 not uploading to Garmin connect

Scales have worked fine up until today. 

I've reset and checked wifi details, tested the connection of the scales to the wifi from the Garmin connect app; that seemed ok but still fails to upload to Garmin connect.

I then hard reset, connected to the wifi again and once again, after a weight measurement it fails to upload. I then hard reset again and tried on a different wifi network, hot spotting with my phone and the same thing occurs.

Any ideas?