today I read this thread and I discovered, that I had a similar problem one year ago. I want to inform you about my solution. Of course t think I had a bit of luck :-)
The password to unlock the RuncoreSSD was
Can you read it? Its 32x the space key.
I tryed some passwords and found out, that the maximum length is 32 characters. And after some attempts I accidental entered 32 time the space key.
So I hope this works four you too.
greetings from Germany.