Same here, no rides uploaded from Garmin to Strava yet. May or May not ever arrive based on past experience.
not sure how to do the FIT file thing, requires Garmin to be connected to a PC as don’t seem to be able to download files from Garmin Connect onto phone to then upload to Strava. @steverob ?
Sometimes you have to delete the run on Garmin connect and upload again for it to work.
You can go to connect.garmin.com and download a file to then upload to Strava. Go into the activity and click on the gear icon at the top right of the page and you get options to download in va formats. I usually select ‘original’.
If the run is already on connect it will not work as connect thinks it has connected with Stava. Its still on your Garmin, always do this if I have a problem on tour.