Microsoft 365 Premium - Copilot Notebook cannot select files from OneDrive

Hello everyone, 

I've tried to use Copilot Notebooks for a few days now but I am not able to select files from my OneDrive. 

When I try to add a reference

and then select OneDrive, the spinner appears and won't go away. When I select a file and want to select it then nothing happens. I also cannot close the pop-up through the "X" or "Cancel" button. 

I am using Edge with the most recent version but I've also tried it in incognito mode, without extensions and a fresh new chrome browser, as well as a different device with different browser and different internet access. I just cannot seem to get it working. 

Is it currently just not working for Personal plans?