Activity looks weird at Strava, but OK at Zwift

My recent Zwift activity looks ok at Zwift, but ride time (1hr 50 min vs. 42 mins at Strava) and average speed etc. is looking off at Strava. Ie. average speed of 70 km/h. Tried to delete and manually add activity at Strava, but same issue.
Can this be fixed? Thanks!