Insights from Copilot have stopped working for us

We're all licensed (verified) with M365 Copilot, and for about the last week, one of our workhorse intake forms has stopped working with regards to the "Insights from Copilot" feature. When we attempt to refresh the insights, it presents the message, "Your form has XX responses. Copilot is analyzing the data to provide insights.", then spins for about 30 seconds, and then presents the error, "The insights haven't been generated successfully. Please try again."

We're syncing responses to an Excel workbook, and that seems fine, but after about a week these "insights" just started failing in this fashion. We've done basic troubleshooting like trying InPrivate browsing, cache clearing, and since we are only at about 100 responses for this particular small form we're not hitting any limits. Regardless, it's wedged stuck in this state. I reported it via the M365 Admin portal and received the usual "No issues found" reply. 🙄

Anyone else seeing this problem? Does anyone actually use this feature? 😜