@Fripp You can check this problem with a simple search on the forum https://forum.suunto.com/search?term=s3f ascent&in=titlesposts Please, always try to use the search function as most of the issues were already discussed. As you can see this was an old solved issue. Which app version do you have ? Which kind of activities do you record ? Because, as a non Baro watch, s3f has a 7 meters threshold to calculate ascent I’m closing this one to avoid duplicates, please use one of the existing discussions to reply.

Do you see graph for that activity in the watch ? If yes (so the full-info activity is still there) the quick way is, delete activity from SA and uninstall-reinstall it so data will be sync again anyway there are several discussions about this topic. I’m closing this one to avoid duplicates. Please join one pf the other discussions and use the search button the next time https://forum.suunto.com/search?term=activity not synced&in=titlesposts&matchWords=all&sortBy=relevance&sortDirection=desc&showAs=posts