My Global Admin account can't access migration tool

Anyone else having an issue with launching the migration tool (I'm doing so as a global admin)? I either get a message about failing a conditional access policy (which, looking at the sign in logs, doesn't appear to be happening) or the tool launches, but says it is not connected to Stream. Clicking the button Connect to Stream just takes me back to the admin page where I can launch the migration tool.

Am trying to get our migration wrapped up, but can't if I can't get to the migration tool. Trying to figure out if this is a "just me" thing or if it's a larger Microsoft thing.

Thanks.