Problems Expanding Drive Capasity

I have replaced both 2T drives for 6T drives in my My Cloud Mirror configured as a RAID1. It went well, the size available remained at 2T as expected. I then tried to Expand the capacity to take advantage of the extra space using the menus Storage/RAID/Change RAID mode/Expand Drive. Nothing seems to be happening and I have the message below that says “Remove Drive One”.

For more than 24 hours the RAID Profile displays:
Expanding, Volume_1 is expanding. And RAID
Volume displays:
Volume_1
RAID 1
1.96 TB
Expanding. Remove Drive1.
https://imgur.com/XNYZHJH

Hi normgr00,

It seems that this issue can be better addressed over a phone call. Please contact our support team for assistance.

Thanks but I figured it out.