Data is not accessible after pluging the 4th HD and upgrading to fw 6.6.0 due to "mv_xor_status+88"

I bought the 4th hard drive today WD Red 4TB. I got another 3 HD plugged already WD Green 4TB. I'm using X-Raid and it was setup as Raid5. After 6% of the re-syncing process NAS Admin was not accessible anymore and I looked into the LCD Display and an error was displayed "mv_xor_status+88". I searched online why and I found a discussion on this forum stating that there was a bug related to this and it is fixed in the version 6.5.2. What I did I updated the firmware to 6.6.0 (I was on 6.5.0) since it was the latest update available. Once the update was completed after 10mins the admin was accessible again but all the HD are now marked red and I have an error message stating "Remove inactive volumes to use the disk. Disk #1,2,3,4.". As I am writing this post here on this forum if I access the volmes tab, in the dialog box I have a message "Resyncing in progress: 9.55%" complete. The problem is that the data is not accessible and the shares are not available. Can you please help me if this is normal or I should do something about it now? Or should I wait for the resyncing to be completed and the shares will be available again?

Please let me know.