Thank you very much, this is what helped. Buffalo support just saved my day as well as your continuous inputs kept me motivated. Never giving up. Thank you thank you thank you. I removed all drives and used LOW LEVEL FORMAT TOOL to format all previous drives.
1. If you have a brand new unused drive, try the recovery process with it populated only.
2. If otherwise, low level format one of these drives , delete existing partitions and retry the procedure with this drive populated alone in the enclosure.
3. Share a video capture of your observations.