Copilot Quick Measure suggestions suddenly not working

Hi.

I have been playing around with Copilot for Power BI, and a few weeks ago i managed to create a number of DAX Measures using the Quick Measure Suggestions functionality.

However, the last few days I have not been able to get any response from Copilot using this feature:

Is anybody else experiencing the same, or has a potential solution?

A few extra bits of info:

• I am signed in to a proper account, and have linked my report to an F64 enabled workspace (not a trial workspace):