Readynas 314 6.10.3 after update No ROOT access - rejecting know good password

After NAS updated 6.10.2 to 6.10.3 all my webserver setting & certificates were lost and my on-line store went down. I can no longer access root directories, my Gateone app I used for SSH no longer works and I can't connect using putty after following instruction and get a network error (even thought there is no issue FTP as admin account). When I use an old root connection in filezilla it tried to connect and says password is invalid

I also can't log onto myPHPAdmin with root password anymore. I changed my Admin password hoping to would set root too, but that not working and I also couldn't use the new Admin password for 15 mins either. No matter what I change Admin password to root isn't authenticating with that password.

I can log into the admin page, been through the SSH setup again. I can FTP using admin but again can not using root!

My store is dead, certificates broke and I can not get to root to try and fix/restore backups etc. I was so dependant on gateone app to access the NAS SSH, but since update that app wont run or re-install. I have shell in a box installed and I get ReadyNAS2 login: prompy, but no idea how to log onto this

Desperate, please help, why is root rejecting my logon,