I'm unable to authenticate my Steam account. I go to the cross save activate page, I type in the information, it's accepted, but no update is given and I'm still left with an unauthenticated steam account. I had no problems linking my Xbox account though. Please help.
Have you tried using your Steam credentials to login to your Bungie profile, and then going into the cross-save page? Sometimes the authentication systems can be finicky, and simply using the other account for the initial login clears things up.