Hello @gorbbs
Thanks for posting about this and sorry for the confusion.
The reason why 'Virtual Row' is not an option when trying to record or create a manual activity is because this sport type acts the same as Virtual Ride/Run. You will need to record a virtual row activity in order for 'Virtual Row' to appear as a sport type on your activity.
Virtual Ride/Run/Row activities are activity recordings which contain GPS, distance, elevation, and time data from a simulated route. You can learn more about virtual activities on Strava here: Virtual Trainer Activities on Strava
In order to classify an activity under a virtual sport type, the activity must be originally recorded as a virtual activity using a supported virtual trainer or treadmill. Performing this action will ensure that your activity file uploaded to Strava has the correct sport type information included. Athletes are no longer able to manually classify activities as virtual.
Please let me know if you have any further questions.