Cannot Authenticate Dynamics Financials Login in PowerBI

When trying to connect to Dynamics Financials via the "Microsoft Dynamics 365 for Financials" app, I can't seem to get get past the authentication page.

1. I enter my oData URL, https://advancedretail.financials.dynamics.com:7048/MS/ODataV4/Company(‘CRONUS%20US’)

2. I select "Basic"

3. I enter my username in Financials, not my email

4. I enter my web access key found in my user profile in Financials.

Once that's complete, I get the following error when I try to log in.

Failed to update data source credentials: Microsoft.Mashup.Engine1.Library.Resources.HttpResource: Request failed: 
 OData Version: 3 and 4, Error: The remote server returned an error: (500) Internal Server Error. (Internal Server Error)
 OData Version: 4, Error: The remote server returned an error: (500) Internal Server Error. (Internal Server Error)
 OData Version: 3, Error: The remote server returned an error: (500) Internal Server Error. (Internal Server Error)

I tried logging in with my Microsoft credentials as well and that doesn't work either.