Apple Watch Series 7 not tracking Workouts
I just recently started using my Apple Watch again for tracking my fitness as it is really useful for this. However, when I start the workout, it does the usual countdown and then it starts the stopwatch. Below the stopwatch the numbers usual are all at 0, kilocalories, distance run, heart rate etc. However now when I am starting the activity, there are just underscores where the numbers usually are. I have tried restarting my Watch and nothing has happened. Has this happened to anybody else?
It is as if the watch is not detecting movement, or heart rate or anything.
Please advise on further information
Apple Watch Series 7