A Microsoft file hosting and synchronization service.
When did you update the storage?
After payment, there may be a delay of up to 48 hours for the new storage space to be updated.
If this deadline has passed, you can contact Microsoft support so that they can help you with this problem.
On your computer, click the Start menu and type Get Help or go to https://support.microsoft.com/contactus
Enter "Purchase" as the keyword > Click on the "Contact Support" button.
Select "Microsoft 365" > "Manage my subscription".
Then fill in a few more details and you'll be transferred to speak with Support.