Cant Re activate Cubase Elements 10.5

Hi, I am yet another person who cant re activate Cubase Elements 10.5 after installing a new drive and reinstaling Windows 10.

I also need to reinstall my upgrade to Cubase 11 too, but who knows if that is possible!

I have managed to eventually get Download Assistant working, I have downloaded the Cubase Elements 10.5 software, and I have installed it on my PC.

I have followed the guide that is suggested in other threads to get a new activation code here: https://helpcenter.steinberg.de/hc/en-us/articles/206530004-Software-license-reactivation-requesting-new-activation-codes

But this does not work for me because I dont have a registered licence there. So I do what the guide suggests:

Only registered licenses can be reactivated!
If you cannot find the license you need to reactivate please click on the button [Register eLicenser / Software] on the top left, to register your software.
Among others, you can apply the already used activation code for registering a license.

This does not work. It says to use my old activation code but this does not work.

I have contacted support 3 times now and they have not responded.

Please help. This is so frustrating, confusing and annoying.