Hi! I have recently acquired a forerunner 255s and all health data is being synchronized correctly but spo2 not. I have the option enabled in intervals settings, and tried unlinking and linking account again. But it is not working. Do you know if there is any problem with this feature? Is it possible to solve it or do any workaround?
Thanks!
Nobody have this problem?? What could be happening?
I have the same issue also. In fact, some odd stuff also occurs in Garmin sync occasionally, i see incorrect HRV in intervals compared to Garmin also, luckily that’s a rare occurrence.
I have just downloaded the historical data again via settings/connected/garmin and its now Sp02 and other items are imported. Although only for some days not all 
Ensuring historical data is “enabled” in Garmin Connect
Whether this will happen going forward now idk.
Clive
