Refresh Data (Stocks?) -- "We need to fix your account" error -- logging back in not working. Anyone else experiencing / advice?

I have spreadsheets that import investment and benchmark information through Microsoft's Stocks function.

Since Thursday, when I hit "refresh data", it gives me a popup error:

"We need to fix your account. In Excel, go to File > Account > Sign out, then sign back in with the account associated with your subscription."

Obviously, I tried this -- logged out and logged back in. Restarted computer, logged out and in. Still receiving the error in multiple spreadsheets.

I have a a vaild, paid subscription.

I thought it might self-resolve and these problems usually do, but it has not yet.

Is anyone else experiencing this? Does anyone have a fix?