Can't find the Extra Space we purchased in Admin Center

We purchased extra space for our SharePoint environment...lots of it.

I can see the line item on the invoice, so I know we've been charged, but the Item is blank. I don't see anything in our Licences or Products. Where can I find the proof we have the extra space.

Also, I can' find any place in the admin center that shows how much space we have available. I see how much space each site is using, but not how much is available. Where can I find out how much space we have available?

Thanks in advance,

Matt