Steinberg Download Assistant 1.37.3 installer setup not opening, resetting my mac (mojave)

So I am trying to redeem my ‘amped elektra’ license from e-license to online license. Realized my assistant app was too old to be able to open.

Downloaded the latest app from the website but, it does not open.
What it does is, very strange enough, it makes my mac mini (mojave) ‘BLINK’ black screen then back to login screen again… which is not a good sign right?

I actually did the FONT BOOK removal. That did not help.

So, for my intel mac mini, I am still on Mojave osx. How will I be able to re-download ‘Amped Elektra’ sound content and re-activate…?

It seems, from my search, the issue has been kept on going…

Any help would be appreciated !

I still have old SDA installed and it says, cannot connect to the server - end program.

Shall I delete this?

Also* I tried to update my JAVA somehow, and now my JAVA panel quits unexpectedly too… lol