A Microsoft file hosting and synchronization service.
Hi xenarthran,
Welcome to the Microsoft community.
I get the same thing when trying to add additional storage to my Microsoft 365 Family plan. Perhaps a single member of that family group cannot purchase addtional storage. I know my subscription has not expired like the message says.
I suggest you click on this link and send an email to the OneDrive support team: https://go.microsoft.com/fwlink/p/?LinkId=528676
That would be the best way to find out. I hope you get your answer soon. Let me know what they say if you want. I don't work for Microsoft.
Best regards,
Craig