Got a message this morning advising OAuth token had expired on the Xero dashboard (which is pretty normal). So went to re-auth within the dataset, but when it bounces out to the Xero site for authentication, after clicking the button to authorise Power BI to connect to our Xero, I now get the error: "Sorry! Power-BI needs to complete certification before they can connect to more Xero organisations. Please let them know you're keen to try their integration." and the only button available is "Back to Power-BI".
Have contacted Xero support and predictably they've said to contact Microsoft. Any ideas?