I have a Forerunner 25.
I did a a run this morning which the watch successfully recorded as an activity.
The data were synced with my phone but it hasn’t recognised the data as a run activity but it has recognised the number of steps.
For info I also have a linked Strava account which also doesn’t show the run.
The firmware on the 25 is out of date being v3.10 but I am loathe to update as I then loose all the local records on the watch.