[Help] Latest update has cause major malfunction

[dodgyroge]

I updated TOS6 to the latest update (6.0.794) on Friday 26th December and then it refused to reboot. I went into the HDMI connection and it went through everything and then I got the log in (but only from HDMI & NOT from a web browser) but no accompanying beep, which just left the web browser page saying loading,...
TNAS PC wouldn't show up my TNAS.
I shut the system down and removed all other HDDs (Not the NVMe & SSD RAID1 - system drive) and it booted up perfectly. And then when the HDDs were inserted, they would then show up on the control panel/disk as all being normal, but obviously none of these would show up in the storage pools.
I rebooted the TNAS with all drives inserted, and again, it refused to boot up correctly.
I contacted support via web chat and they told me to reinstall TOS6 (after initially telling me to use the reset button on the motherboard - which is not a feature of the T12-423) but removing the NVMe drive. So I reinstalled TOS 6 over the top of the (other part of the RAID1) SSD but this didn't fix the issue, everything was still exactly the same, apart from losing all user configurations. So I turned it off again, removed the SSD and reformatted it (on a PC), put the NVMe back in, then the SSD and sync'd the RAID1. Now I'm back to the same as it was after the update, with no access to the RAID5 (5x18TB) and TRAID (3x16TB & 2x18TB). I have been contacting the support via webchat and was told in the early hours (UTC) of Saturday that I would have to wait until Monday to speak with an engineer as they would need to dial in remotely to fix the issue.
So I waited up all night on Sunday until 2am on Monday, to try to get this problem rectified and was told it would be 3-8 hours. I waited up until 6am, then set my alarm to get up at 8am (we in the UK are 8 hours behind the support staff) and was just told to wait to be contacted by the engineer.
So, today (Monday night/Tuesday morning) it is currently 04:30 am and I still keep being told by the web support staff that I will be contacted. The latest reply was that "He will review your email and connect it with you". But I was told yesterday that they were already reviewing the e-mailed system generated report and would contact me afterwards.
I have been stuck with no access to my data, all my CCTV cameras are not recording (surveillance manager will work {if i remove all the HDDs before booting up}, but has nowhere to record the data to).
Obviously someone needs to remotely dial in to fix this, but nothing is happening and I am getting no updates as to when anyone is actually going to do something to resolve this.
Added to that, I am having to wait up all night, just to speak to someone, only to keep being told to go to bed and the engineer will contact me. BUT, if I am in bed, then they will not be able to contact me, and by the time I wake up they will have finished work for the day, and then I will have to wait up all night again the following night!
Can someone please help me with this?
The support I have received in the past has been absolutely excellent, but this recent experience has been terrible.

[CursaYang]

Hello, we apologize for the poor experience we have given you. We replied to you via email and are not sure if you received it. Now we are synchronizing the analysis results of the report to you.

The HDDs placed after starting TOS cannot be automatically activated and mounted. Therefore, you will not see their storage pools and volumes.

We found that in addition to the latest TOS 6.0.794 system version on NVMe, your other HDDs have other TOS system versions. It is guessed that the reason for this problem is that you did not place all the HDDs when updating TOS.

Temporary solution:
Open the terminal and execute the command to activate and mount your other two storage pools and their corresponding volumes.
/etc/tos/scripts/mntdata

Subsequent solution:
In Control Panel - Disks - System Disk, add the TOS system on NVMe to a certain HDD, and then delete the TOS system on this HDD. Do this for each HDD. This will clean up the residual old systems on each HDD, allowing you to successfully start the system with all HDDs installed.