One more thing to try:

Uninstall SoftRAID using the terminal steps give earlier.

Then download a fresh copy using your cell phone. (Wi fi OK if need be)

try this copy. Make sure you copy SoftRAID into the applications folder before launching it to install.

I don't think the driver version will make a difference, no.

The M1, you need to enable third party security. I am at a loss also. There are no files from windows  brought over. The partition map on the disk enables the OS to determine what driver to control it with. So there is no driver from Windows that macOS can detect.

Let me ask an engineer tomorrow, this is baffling to me also.

I did not do the csrutil disable in this new mac M1 14. 

Two issues then

1) happy to do it again in this M1 Macbook Pro 14 if you think it would make a difference (I am hesitant to do it in my main intel-iMac; as if it does not solve it, I would have lost a few hours of installing all the software I use); should I can start again with "erase all content and settings? in which steps I should do the csrutil disable and the rest?

2) you kindly explained that the quarantined is triggered when the system perceives the file is coming from other computer. just to confirm, this "other computer" could it be the Windows machine I used the drive on? does the Windows use of the drive modifies the drives? does it leave a flag/residue on the drives? I am just trying to think what could be happening; I am running out of ideas.

When csrutil is disabled, the Security is disabled, and I don't see how the driver can be quarantined.

Especially if you also try on a fresh macOS install.

On that install, did you migrate data, or was it truly a clean install?

To confirm, you took the clean install of macOS. Did not do a data migration

Downloaded a fresh 6.2

installed the driver with csrutil disabled.

And it quarantined it?

So as we stand, I cannot access the drive not even in MacOs Intel, MacOS M1 or Windows 11. I am losing hope the enclosure would ever work again. I think almost all the files inside I have a backup for, but would really want to keep using the Thunderbay (it was not cheap).

Any help greatly appreciated. and many thanks for all your patience so far. 

for kicks, while disabled I download SoftRAID 6.2 trial and the same. 

there is no impact of it being a trial, correct? I have the license but I have been lazy to enter the serial number after each of these attempts. 

@danrdz10103 

The quarantine is not something Apple does as a list. It is a "security" mechanism that triggers based on unavailable information. Mostly when a DMG or application is copied from another computer and attempts to install any components.

Here is the next step:

We will disable System Security, install the driver, then enable it again.

Run SoftRAID and Uninstall all components

Startup without the drives connected, and hold command r

go to terminal and type

csrutil disable

restart

Run SoftRAID and install the driver.restart

Connect your volume. It should mount.

If it does, restart, command r.

In terminal,

csrutil enable

That will put security back to normal.

Hopefully this will fix all this.

sorry to report, even after the csrutil disable, I am still getting the "disk you attached was not readable" and SoftRAID.kext still shows quarantined by com.apple.quarantine.

is there a way to check the status of csrutil (to see if the disable) survived the reboot?