I can't open Download Assistant

When I try to install the an update for C12, by using SDA, after clicking on the icon opens the message - Sign in. (White letters on a red rectangle). I can only click on it. When clicked, it automatically opens Microsoft Edge (normally I don’t use Edge, but Chrome) and Steinberg website with email and password. After filling in the fields, clicking on “next” receives a message:
To authorize Steinberg Download Assistant, you must allow your browser to open Steinberg Download assistant. Once authorization is completed, you can close this page and continue working with steinberg download assistant. "
I don’t know what to do …
I have never had such problems before.
I have no idea how do I allow my browser to open SDA …