Steinberg download assistant unable to connect with download manager

Hello,
I bought cubase artist. I installed steinberg download assistant, everything went great, but I accidentally installed cubase pro TRIAL. After noticing I deleted all the installed things to start over again, wanting to download Artist.

I begin with downloading SDA, agree, install, etc etc, but when I sign in, I get the error: unable to connect with download manager.
(This did not occur when I accidentally downloaded the Pro Trial)

I uninstalled SDA, installed it again, checked the latest version of SDA, put down a part of the windows security, checked for ‘aria’ in hard drive, made the folder Install Assistant manually, restarted laptop, checked for updates…

Still not working.
Please somebody help, me crying rn