Manually? How you do that? Never done it before.
If it starts working again, does it only do so from that moment in time going forward, and ignore those rides left in limbo?
To upload a ride - I've only ever done it on a PC or laptop - first open your ride in the Bkool website. One of the boxes on the right of the map is a blue square with an orange arrow coming out of it. Click on this, choose "fit" file and export. It'll export the fit file to the downloads file on your computer. Open Strava and click on the + sign on the top right, chose "upload ride" and then "choose file", and find the fit file in your downloads. Double click on it and it will upload to Strava. You do then need to remember to change the activity type to virtual ride.
I can't remember exactly what happened when it started working again last time but I had manually uploaded a couple of rides while it wasn't working and they didn't get duplicated.