Every time I ask copilot in 365 to do something with calendar or email, it tells me it has no access but helpfully suggests I could paste some content in...

I check in once a month or so and get the same results.

I believe you need to pay for an add-on called "Microsoft 365 Copilot"

https://www.microsoft.com/en-gb/microsoft-365-copilot

Wouldja look at that. Thanks!

The naming of these things makes it all very clear, really.