I know official BIAB support is closed until Monday, that's why I'm here.

I just installed BIAB 2021 and tried to run bbw64.exe
But it won't run. It gives an error and ends with:
"Access is denied"
Was trying to get help in chat before it closed.
They said follow these instructions to get permission for the files.
I followed as best I could but it didn't work.
Can anyone help me?