Ciao ​@Dom1982. Look at the thread below related with your issue. Mainly the answer quoting Health sync app. Hope it helps.

https://communityhub.strava.com/devices-and-connections-6/strava-doesn-t-synch-with-samsung-health-5063?tid=5063&fid=6

Thanks. 

I'll note it was working perfectly fine before today with the syncing. So not sure why it's all of a sudden decided not to. Will see what happens tomorrow. May just have to use the Strava app on my phone rather then going through Samsung health and then Strava and Runna lol might be too much syncing going on