As many others have seemingly encountered, when I attempt to upload content it says I am out of storage, but when I visit Admin it says I have ~50% quota remaining. When I signed up for this, the developer account gave 50GB of space for lifetime, but currently the developer account only provides 10GB, which I suspect is the source of the issue.

Can someone please help, or advise on how I can submit a support ticket? (another option that has been seemingly removed from developer accounts as well)