The Vo2Max score hasn't been updating properly since I added a Vivoactive 3 to my account. I've been using an FR735 trough the summer and was staying steady around 53. A couple of times I had to revert to my FR235, which had a lower Vo2Max score on it, a couple of times when I'd forgotten to charge the 735. After a run with the 235 my Vo2Max score would change on GCM to what that watch had stored on it but would revert the next time I used the 735. No problem as I expected it.
However with the VA3 the score in Connect got set to 47 the first time I used it, again as expected, but the next time I used my 735 the graph in GCM showed 53 again but the pane below it said 47. Since then, about 2 weeks, the score has remained the same while the graph is only showing through the last time I used the 735 and shows at 53. Also during the time between the last run I did with the 735 and now (5 days) the score on the VA3 has risen to 50 but there is no data on the graph.
The score and graph are the same both on the Connect web interface and the GCM app. Each watch shows their current Vo2Max scores. 53 on the 735 and 50 on the VA3