Hello @Brandon Paulk Thank you for contacting us through Microsoft Q&A platform and Sorry for the inconvenience caused to you!Based on the details provided, I understand that you are unable to login to Azure Appliance Configuration Manager due to some errors.
Also, noticed that you have reported this issue on a similar discussion here - https://learn.microsoft.com/en-us/answers/questions/1684588/asr-replication-appliance-aadsts165000-invalid-req#message-latest and I guided the customer to supported. Azure support has shared a workaround, you might want to try it and let us know if that helps resolve the issue.
Step 1: Click on Azure Login option in Appliance Configuration Manager and copy code & Login
Step 2: In the new tab, you will encounter the above error message.
Step 3: Either refresh the Azure login tab or open a new tab with https://microsoft.com/devicelogin URL and enter the device code.
Step 4: After login in successful, close the tab and switch back to Configuration manager.
Hope this helps. Please reply if you have any concerns or need further assistance.
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